PROPORTIONALITY-001™

The SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™

Establishing Proportionate, Necessary and Least-Harm Institutional Decision-Making Across Governance, Safeguarding, Risk, Intervention, Restriction and Accountability

Framework Reference: PROPORTIONALITY-001™
Framework Series: SAFECHAIN™ Governance Architecture Series — Governance Authority, Reasoning & Accountability
Author: Samantha Avril-Andreassen, LLB (Hons), LLM, LPC, FRSA
Founder — SAFECHAIN™
Version: 1.0
Year: 2026

1. Framework Purpose

The SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™ (PROPORTIONALITY-001™) establishes a structured governance methodology for determining whether institutional actions, interventions, restrictions, sanctions, controls and other consequential decisions are justified, necessary and proportionate to the legitimate objective being pursued.

Institutions regularly exercise power in circumstances where action may be justified.

But the existence of a legitimate concern does not automatically justify every available response.

A risk may exist without requiring the most restrictive intervention.

A policy objective may be legitimate while the means used to achieve it remain excessive.

A safeguarding concern may require urgent action while still requiring consideration of foreseeable secondary harm.

A sanction may be available without being necessary.

A restriction may be administratively convenient without being proportionate.

And an institution may correctly identify a problem while responding to it in a way that creates greater avoidable harm than the problem required.

PROPORTIONALITY-001™ therefore establishes a fundamental governance distinction between:

The authority to act

and

the justification for the extent of the action taken.

Its foundational principle is:

Institutional power should not impose greater restriction, burden, intrusion or foreseeable harm than is reasonably necessary to achieve a legitimate and evidenced governance objective.

The framework establishes the proportionality pathway:

Objective → Evidence → Necessity → Alternatives → Least-Harm Option → Impact → Vulnerability → Safeguarding → Balance → Decision → Safeguards → Review

2. Framework Objectives

PROPORTIONALITY-001™ is designed to:

2.1 Establish Legitimate Purpose

Require institutions to identify the objective that an intervention is intended to achieve.

2.2 Test Necessity

Determine whether intervention is genuinely required.

2.3 Examine Alternatives

Require realistic, less restrictive options to be considered.

2.4 Apply Least-Harm Reasoning

Identify whether the objective can be achieved through an effective option producing less foreseeable harm.

2.5 Evaluate Impact

Consider the actual and foreseeable consequences of institutional action.

2.6 Integrate Vulnerability

Recognise that apparently equal interventions may produce unequal effects.

2.7 Strengthen Safeguarding

Prevent governance responses from creating avoidable secondary or cumulative harm.

2.8 Control Escalation

Ensure restrictions and sanctions do not become progressively more severe without renewed justification.

2.9 Strengthen Review

Require continued interventions to remain necessary and proportionate over time.

2.10 Improve Accountability

Create a traceable record explaining why the selected intervention was justified.

3. The SAFECHAIN™ Proportionality Principle™

PROPORTIONALITY-001™ establishes the SAFECHAIN™ Proportionality Principle™:

The severity of an institutional response should bear a defensible relationship to the evidence, risk, legitimate objective, available alternatives, vulnerability of those affected and foreseeable consequences of the intervention.

4. Governance Proportionality

For the purposes of PROPORTIONALITY-001™, governance proportionality means:

The disciplined assessment of whether an institutional intervention is suitable, necessary, appropriately balanced and no more harmful or restrictive than reasonably required to achieve its legitimate objective.

5. Necessity

Necessity asks whether action is actually required.

It is not enough that an intervention is:

• Available;

• permitted;

• customary;

• convenient;

• preferred.

6. SAFECHAIN™ Necessity Principle™

An available power should not automatically become a necessary intervention merely because the institution possesses the authority to use it.

7. Least-Harm Governance

Least-harm governance requires consideration of whether an effective alternative exists that would achieve the legitimate objective while creating less foreseeable harm.

8. SAFECHAIN™ Least-Harm Principle™

Where two reasonably effective governance responses are available, the institution should ordinarily prefer the option capable of achieving the legitimate objective while creating the least unnecessary restriction, burden or foreseeable harm.

Least harm does not mean no harm.

Some legitimate interventions inevitably create adverse consequences.

The question is whether avoidable harm has been minimised.

9. The SAFECHAIN™ Proportionality Architecture™

PROPORTIONALITY-001™ establishes twelve domains:

PA1 — Legitimate Objective

What is the institution trying to achieve?

PA2 — Evidence

What evidence demonstrates the need to act?

PA3 — Suitability

Can the proposed action realistically achieve the objective?

PA4 — Necessity

Is intervention genuinely required?

PA5 — Alternatives

What other realistic options exist?

PA6 — Least Harm

Could an effective less harmful option achieve the objective?

PA7 — Impact

What consequences will the intervention create?

PA8 — Vulnerability

Will particular people experience greater impact?

PA9 — Safeguarding

Could the intervention itself create or compound harm?

PA10 — Balance

Does the expected benefit justify the burden imposed?

PA11 — Safeguards

What controls can reduce adverse consequences?

PA12 — Review

Does the intervention remain proportionate over time?

10. Legitimate Objective

Every material intervention should have an identifiable purpose.

Examples may include:

• Protecting people;

• managing significant risk;

• complying with legal duties;

• preserving organisational integrity;

• protecting assets;

• preventing misconduct;

• maintaining service safety;

• protecting evidence.

11. SAFECHAIN™ Legitimate Objective Test™

Ask:

What specific objective are we pursuing?

Is that objective legitimate?

What evidence establishes the need to pursue it?

Is the proposed intervention genuinely connected to it?

12. Objective Drift™

PROPORTIONALITY-001™ establishes SAFECHAIN™ Objective Drift™.

Objective Drift™ occurs where the justification for an intervention changes over time without transparent reassessment.

13. SAFECHAIN™ Objective Stability Principle™

An intervention should not continue under a materially different justification without renewed assessment of its necessity and proportionality.

14. Evidence of Need

A proportional intervention requires sufficient evidence that action is warranted.

15. SAFECHAIN™ Intervention Evidence Principle™

The greater the restriction, consequence or foreseeable harm of an intervention, the stronger the expectation of a sufficiently reliable evidential basis.

16. Evidence Deficiency

Where evidence is incomplete, uncertainty should be recognised.

Precautionary action may sometimes remain necessary.

However, uncertainty should not automatically justify maximum intervention.

17. SAFECHAIN™ Uncertainty–Intervention Principle™

Where evidence is uncertain but potential harm is serious, precautionary action may be justified, but the intervention should remain proportionate to both the risk and the uncertainty and should be subject to timely review.

18. Suitability

A measure should be capable of advancing its stated objective.

19. SAFECHAIN™ Suitability Test™

Ask:

How will this intervention achieve the objective?

What evidence supports that expectation?

Could it fail?

Could it worsen the problem?

20. Ineffective Restriction Risk™

A SAFECHAIN™ Ineffective Restriction Risk™ arises where an intervention creates significant burden or harm without materially advancing the stated objective.

21. Necessity Assessment

Before imposing a consequential intervention, decision-makers should ask:

What happens if we do nothing?

Is intervention required now?

Could monitoring or a lower-level response be sufficient?

22. SAFECHAIN™ Necessity Threshold™

The necessity threshold increases with:

• Severity;

• duration;

• irreversibility;

• intrusion;

• vulnerability impact;

• safeguarding consequence.

23. Convenience Is Not Necessity™

PROPORTIONALITY-001™ establishes:

Administrative convenience should not be represented as necessity where the intervention imposes significant avoidable harm or restriction.

24. Institutional Efficiency

Efficiency may be a legitimate consideration.

But efficiency should not automatically outweigh:

• Safeguarding;

• fairness;

• participation;

• vulnerability;

• rights;

• serious individual impact.

25. Alternatives

A proportionality assessment should consider realistic alternatives.

26. SAFECHAIN™ Alternatives Principle™

A material intervention should not be described as necessary where a reasonably available, sufficiently effective and materially less harmful alternative has not been adequately considered.

27. SAFECHAIN™ Intervention Alternatives Record™

For high-impact decisions, organisations may record:

☐ Proposed intervention
☐ Alternative option
☐ Expected effectiveness
☐ Risk
☐ Harm
☐ Cost
☐ Practicality
☐ Reason accepted/rejected

28. False Binary Risk™

PROPORTIONALITY-001™ establishes SAFECHAIN™ False Binary Risk™.

This occurs where decision-makers frame the choice as:

Do nothing

or

apply the proposed intervention

when intermediate options exist.

29. Graduated Intervention

Institutions should consider graduated responses where appropriate.

30. SAFECHAIN™ Graduated Response Principle™

Potential progression may include:

Information → Support → Monitoring → Adjustment → Formal Requirement → Restriction → Escalated Intervention

The sequence will vary according to context and urgency.

31. Immediate Escalation

Graduated intervention does not require institutions to start with the weakest response where credible evidence indicates serious or imminent risk.

32. SAFECHAIN™ Serious Risk Exception™

Where delay would create unacceptable safeguarding or governance risk, immediate stronger intervention may be justified, provided the reason for bypassing lower-level options is documented and reviewed.

33. Least-Harm Assessment

The least-harm assessment considers:

• Physical harm;

• psychological harm;

• financial harm;

• reputational harm;

• exclusion;

• displacement;

• service loss;

• privacy intrusion;

• participation barriers;

• secondary safeguarding consequences.

34. SAFECHAIN™ Least-Harm Matrix™

A SAFECHAIN™ Least-Harm Matrix™ may compare options across:

Effectiveness | Restriction | Harm | Vulnerability Impact | Reversibility | Safeguarding Risk | Duration

35. Harm Transfer™

PROPORTIONALITY-001™ establishes SAFECHAIN™ Harm Transfer Risk™.

This occurs where an institution reduces one organisational risk by transferring disproportionate harm to another person, group or system.

36. SAFECHAIN™ Harm Transfer Principle™

Risk management should not be treated as successful merely because institutional exposure decreases while foreseeable harm is displaced elsewhere.

37. Secondary Harm

Institutional interventions may create consequences beyond their immediate purpose.

38. SAFECHAIN™ Secondary Harm Principle™

Decision-makers should consider whether an intervention may cause:

• Destabilisation;

• loss of support;

• loss of accommodation;

• loss of income;

• retraumatisation;

• increased vulnerability;

• isolation;

• reduced participation;

• new safeguarding risk.

39. Cumulative Harm

Several individually modest interventions may together create serious harm.

40. SAFECHAIN™ Cumulative Impact Principle™

Proportionality should assess the cumulative effect of institutional action where multiple interventions materially affect the same person, group or system.

41. SAFECHAIN™ Cumulative Harm Review™

The review asks:

What other restrictions or burdens already exist?

What additional effect will this intervention create?

Does the combined impact alter the proportionality assessment?

42. Vulnerability

An intervention may affect vulnerable people differently.

43. SAFECHAIN™ Vulnerability-Adjusted Proportionality Principle™

An intervention that appears proportionate in general terms may become disproportionate where known vulnerability materially increases its foreseeable impact.

44. Equality of Impact

Formal equality does not guarantee proportional impact.

Applying the same measure to everyone may produce materially different consequences.

45. SAFECHAIN™ Differential Impact Test™

Ask:

Who will be affected most?

Why?

Is that difference foreseeable?

Can the harm be mitigated?

46. Safeguarding

Safeguarding should be integrated into proportionality assessment where relevant.

47. SAFECHAIN™ Safeguarding Proportionality Principle™

A governance intervention should not be treated as proportionate without considering whether it creates, increases or compounds a credible safeguarding risk.

48. Protective Intervention

Some interventions exist specifically to prevent harm.

Their protective purpose does not remove the need for proportionality.

49. SAFECHAIN™ Protective Measure Balance™

Protective measures should consider:

Risk prevented

against

harm created by the protective measure itself.

50. Participation

People materially affected by an intervention may hold evidence relevant to proportionality.

51. SAFECHAIN™ Participation-before-Burden Principle™

Where practicable and compatible with safety, a person facing a significant institutional burden should have a meaningful opportunity to provide information capable of affecting the proportionality assessment.

52. Urgency

Urgency may limit prior participation.

It should not automatically remove later review.

53. SAFECHAIN™ Urgent Intervention Review Principle™

Where urgency prevents full proportionality assessment before action, the intervention should receive sufficiently prompt retrospective review once immediate risk permits.

54. Duration

A proportionate intervention at one point may become disproportionate through continuation.

55. SAFECHAIN™ Temporal Proportionality Principle™

Proportionality is not fixed at the moment of decision; continuing restrictions require continuing justification.

56. Intervention Sunset™

Time-limited interventions should have a review or expiry mechanism.

57. SAFECHAIN™ Proportionality Sunset Rule™

Exceptional or restrictive measures should not become indefinite merely because nobody has formally reconsidered them.

58. Review Triggers

Review should occur where:

• New evidence emerges;

• risk decreases;

• risk increases;

• circumstances change;

• vulnerability changes;

• harm becomes greater than anticipated;

• the intervention proves ineffective.

59. Escalation

An intervention may require escalation.

Escalation should have an evidential basis.

60. SAFECHAIN™ Escalation Proportionality Rule™

Escalation should reflect changed or better-understood risk rather than institutional frustration, disagreement or failure of an earlier measure alone.

61. De-Escalation

Proportionality includes reducing restrictions when justification weakens.

62. SAFECHAIN™ De-Escalation Duty™

Where the evidence no longer supports the existing level of restriction, institutions should consider reducing, modifying or ending the intervention.

63. Restriction Creep™

A SAFECHAIN™ Restriction Creep™ occurs where interventions become progressively broader or more severe without explicit reassessment.

64. SAFECHAIN™ Restriction Boundary Principle™

Any material expansion in:

• Scope;

• duration;

• population affected;

• conditions;

• enforcement;

should trigger renewed proportionality consideration.

65. Sanctions

Sanctions should reflect:

• Seriousness;

• evidence;

• intent where relevant;

• impact;

• recurrence;

• mitigation;

• vulnerability;

• available alternatives.

66. SAFECHAIN™ Sanction Proportionality Principle™

The availability of a maximum sanction does not establish that the maximum sanction is appropriate.

67. Zero-Tolerance Policies

Zero-tolerance approaches may create governance risk where they remove meaningful consideration of context.

68. SAFECHAIN™ Context Preservation Principle™

Policies designed to create consistency should not unnecessarily eliminate consideration of materially relevant context, safeguarding, vulnerability or proportionality.

69. Policy Application

A policy-compliant decision may still require proportionality analysis.

70. SAFECHAIN™ Policy-Is-Not-Proportionality Principle™

Compliance with an internal policy does not, by itself, demonstrate that the resulting intervention is proportionate in the circumstances.

71. Discretion

Where discretion exists, decision-makers should use it transparently and consistently.

72. SAFECHAIN™ Discretion Accountability Principle™

Material discretion should be connected to:

Evidence → Context → Reasoning → Proportionality → Decision

73. Proportionality and Authority

AUTHORITY-001™ determines whether the institution possesses authority to act.

PROPORTIONALITY-001™ determines whether the extent of that action is justified.

74. SAFECHAIN™ Authority–Proportionality Distinction™

Possessing legitimate authority to impose an intervention does not establish that every exercise of that authority is proportionate.

75. Proportionality and Reasoning

REASONING-001™ requires the proportionality analysis to be traceable.

76. SAFECHAIN™ Proportionality Reasoning Trace™

Objective → Evidence → Necessity → Alternatives → Harm → Balance → Intervention

77. Proportionality and Integrity

INTEGRITY-001™ requires ethical judgement in the exercise of institutional power.

78. SAFECHAIN™ Ethical Proportionality Question™

Would we regard this intervention as reasonable if its full consequences were visible to an informed independent observer?

79. Proportionality and Conflict

CONFLICT-001™ applies where a decision-maker has an interest in imposing or maintaining a particular intervention.

80. SAFECHAIN™ Interested Decision-Maker Risk™

A proportionality assessment may require additional independent scrutiny where the decision-maker materially benefits from the intervention or avoids institutional criticism through its use.

81. Proportionality and Challenge

CHALLENGE-001™ should enable legitimate challenge to:

• Necessity;

• evidence;

• alternatives;

• impact;

• duration;

• safeguarding consequences.

82. SAFECHAIN™ Proportionality Challenge Principle™

A challenge to the severity of an intervention should not automatically be treated as a challenge to the legitimacy of the underlying objective.

A person may accept the objective while disputing the means.

83. Proportionality and Decision-Making

DECISION-001™ requires proportionality to be integrated into consequential institutional decisions.

84. Proportionality and Duty

DUTY-001™ identifies institutional responsibilities.

Duties should be discharged through proportionate action.

85. Least-Harm and Non-Action

Least harm does not always mean minimal intervention.

Failure to act may itself create serious harm.

86. SAFECHAIN™ Action–Inaction Balance™

Proportionality should compare:

Harm of intervention

with

harm of failing to intervene.

87. Under-Intervention Risk™

PROPORTIONALITY-001™ establishes SAFECHAIN™ Under-Intervention Risk™.

An excessively weak response may be disproportionate to serious risk because it fails to protect those exposed to foreseeable harm.

88. SAFECHAIN™ Balanced Protection Principle™

Proportional governance avoids both excessive intervention and inadequate protection.

89. Reversibility

Reversibility matters.

Where evidence is uncertain, a reversible measure may sometimes be preferable to an irreversible one.

90. SAFECHAIN™ Reversibility Principle™

Where effective options are otherwise comparable, decision-makers should consider whether a reversible intervention reduces the risk of permanent harm from an incorrect decision.

91. Irreversible Decisions

Irreversible or difficult-to-reverse decisions require stronger scrutiny.

92. SAFECHAIN™ Irreversibility Threshold™

The evidential and reasoning threshold should ordinarily increase where an intervention:

• Permanently removes rights or opportunities;

• destroys assets;

• causes permanent exclusion;

• creates irreversible disclosure;

• produces lasting safeguarding consequences.

93. Precaution

The precautionary principle may justify protective action before certainty exists.

But precaution should remain proportionate.

94. SAFECHAIN™ Precautionary Governance Principle™

Serious credible risk may justify action under uncertainty, but uncertainty should trigger safeguards, review and reversibility where possible rather than unlimited intervention.

95. Burden Distribution

Institutions should consider who bears the burden of risk controls.

96. SAFECHAIN™ Burden Distribution Test™

Ask:

Who receives the benefit?

Who bears the burden?

Is that allocation justified?

Could the burden be distributed more fairly?

97. Institutional Self-Protection

Organisations may legitimately protect themselves against risk.

However, institutional self-protection should not become an automatic justification for disproportionate harm.

98. SAFECHAIN™ Institutional Self-Protection Risk™

A risk arises where the organisation transfers excessive burden to individuals primarily to reduce:

• Reputational risk;

• administrative complexity;

• litigation exposure;

• internal accountability.

99. Least-Harm Safeguards

Where a harmful intervention remains necessary, mitigating safeguards should be considered.

100. SAFECHAIN™ Harm Mitigation Requirement™

Potential safeguards include:

• Reduced duration;

• narrower scope;

• additional support;

• phased implementation;

• review;

• independent oversight;

• accessible challenge;

• alternative arrangements.

101. Least-Harm Decision Record™

PROPORTIONALITY-001™ establishes the SAFECHAIN™ Least-Harm Decision Record™.

It may contain:

☐ Legitimate objective
☐ Authority
☐ Evidence
☐ Risk
☐ Necessity
☐ Alternatives
☐ Least-harm analysis
☐ Vulnerability
☐ Safeguarding
☐ Cumulative impact
☐ Reversibility
☐ Expected benefit
☐ Expected harm
☐ Mitigation
☐ Decision
☐ Duration
☐ Review date

102. SAFECHAIN™ Proportionality Balance Record™

For high-impact decisions, organisations may document:

Benefit Expected → Harm Expected → Alternatives → Safeguards → Residual Impact → Justification

103. Proportionality Classification™

PROPORTIONALITY-001™ establishes the SAFECHAIN™ Proportionality Integrity Classification™:

PI1 — Proportionate

Necessary, evidence-based and appropriately balanced.

PI2 — Proportionate with Safeguards

Justified subject to defined mitigation and review.

PI3 — Uncertain

Material information is insufficient to determine proportionality confidently.

PI4 — Disproportionate

The intervention exceeds what is reasonably justified by the evidence, objective or available alternatives.

PI5 — Critical/Systemic Failure

Disproportionate intervention is serious, repeated or embedded within institutional practice.

104. Least-Harm Classification™

The SAFECHAIN™ Least-Harm Classification™ may identify:

LH1 — Least-Harm Option Demonstrated

LH2 — Lower-Harm Option with Conditions

LH3 — Least-Harm Position Uncertain

LH4 — Less Harmful Effective Alternative Available

LH5 — Harm Minimisation Failure

105. Proportionality Review

Review should determine:

• Whether the objective remains legitimate;

• whether the evidence has changed;

• whether intervention remains necessary;

• whether harm has increased;

• whether a less restrictive alternative now exists.

106. SAFECHAIN™ Continuing Necessity Test™

If this intervention were being proposed for the first time today, on the evidence currently available, would we still impose it at the same level?

If not, reconsideration may be required.

107. Outcome Evaluation

Institutions should examine whether interventions actually achieved their objectives.

108. SAFECHAIN™ Intervention Effectiveness Review™

The review compares:

Expected Outcome → Actual Outcome → Expected Harm → Actual Harm → Learning

109. Unintended Consequences

Unexpected harm should inform future proportionality assessments.

110. SAFECHAIN™ Harm Learning Loop™

Intervention → Outcome → Harm → Review → Learning → Redesign

111. Proportionality Audit

A SAFECHAIN™ Governance Proportionality Audit™ may test:

• Legitimate objectives;

• evidence;

• necessity;

• alternatives;

• least-harm reasoning;

• vulnerability;

• safeguarding;

• duration;

• review;

• outcomes.

112. Proportionality Assurance

ASSURANCE-001™ may independently test whether proportionality controls operate effectively.

113. Proportionality Validation

VALIDATION-001™ may test whether stated proportionality mechanisms produce meaningful practice.

114. Proportionality Monitoring

MONITORING-001™ may monitor:

• High-impact interventions;

• long-duration restrictions;

• repeated extensions;

• PI4/PI5 findings;

• LH4/LH5 findings;

• disproportionate-impact indicators.

115. Proportionality Remediation

REMEDIATION-001™ should address identified disproportionate interventions and systemic causes.

116. Proportionality Oversight

OVERSIGHT-001™ should receive visibility of serious, repeated or systemic proportionality failures.

117. Proportionality Metrics

METRICS frameworks may measure:

• Intervention duration;

• review completion;

• escalation;

• de-escalation;

• alternatives considered;

• disproportionate impact;

• intervention reversals.

118. Proportionality Dashboard™

A SAFECHAIN™ Governance Proportionality & Least-Harm Dashboard™ may display:

• High-impact interventions;

• PI classifications;

• LH classifications;

• overdue reviews;

• safeguarding impacts;

• long-duration restrictions;

• repeated escalations;

• de-escalation opportunities.

119. AI and Proportionality

Automated systems may recommend restrictions or interventions.

Human accountability should remain clear.

120. SAFECHAIN™ Algorithmic Proportionality Principle™

An automated recommendation should not be treated as proportionate merely because it was generated consistently by an algorithmic system.

121. Algorithmic Severity

Automated systems should be tested for whether they systematically produce excessive intervention for particular populations or circumstances.

122. SAFECHAIN™ Automated Harm Amplification Risk™

This arises where automated decision systems scale disproportionate interventions across large populations.

123. Human Review

High-impact automated interventions should provide meaningful human review where required by applicable governance or legal standards.

124. SAFECHAIN™ Human Proportionality Accountability Principle™

Where institutional power is materially exercised through automated systems, an identifiable accountable authority should remain responsible for determining whether the resulting intervention is justified and proportionate.

125. Proportionality Culture

Weak governance cultures may equate:

More control = more safety

or

Stronger sanction = stronger governance.

Neither assumption is necessarily correct.

126. SAFECHAIN™ Proportionality Culture Principle™

Mature governance seeks the response that is sufficient to protect legitimate interests without creating unnecessary institutional harm.

127. Leadership Responsibility

Leaders should ensure that organisational incentives do not reward unnecessary escalation.

128. SAFECHAIN™ Leadership Proportionality Principle™

Leadership should scrutinise whether:

• Policies encourage maximum intervention;

• staff fear de-escalation;

• restrictive measures become default;

• institutional self-protection overrides safeguarding.

129. Proportionality Maturity Model™

PROPORTIONALITY-001™ establishes five maturity levels:

PM1 — Power-Led

Interventions are driven primarily by available authority or policy.

PM2 — Justified

Basic reasons for interventions are documented.

PM3 — Proportionate

Necessity, alternatives, impact and least-harm considerations are systematically assessed.

PM4 — Assured

Proportionality decisions are independently monitored, tested and reviewed.

PM5 — Adaptive

Outcome evidence, safeguarding intelligence and harm data continuously improve institutional intervention design.

130. Proportionality Maturity Ceiling™

Advanced maturity should not be claimed where material weaknesses persist in:

• Necessity;

• alternatives;

• least-harm analysis;

• vulnerability;

• safeguarding;

• review;

• de-escalation.

131. SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Test™

Before imposing or continuing a consequential intervention, organisations should ask:

1. What legitimate objective are we pursuing?

2. What authority permits us to act?

3. What evidence demonstrates the need for intervention?

4. How reliable is that evidence?

5. Is the proposed intervention capable of achieving the objective?

6. Is intervention genuinely necessary?

7. What would happen if we did not intervene?

8. What realistic alternatives exist?

9. Is there an effective less restrictive option?

10. Is there an effective less harmful option?

11. What foreseeable harm will the proposed intervention create?

12. Who will bear that harm?

13. Does known vulnerability increase its impact?

14. Could the intervention create or compound safeguarding risk?

15. What is the cumulative impact alongside existing restrictions or burdens?

16. Is the intervention reversible?

17. What safeguards could reduce the harm?

18. How long should the intervention last?

19. When will continuing necessity be reviewed?

20. If we had to demonstrate to an informed independent reviewer that no reasonably available, sufficiently effective and materially less harmful intervention could achieve the same legitimate objective, could the evidence and reasoning recorded today genuinely support that conclusion?

The twentieth question is the central proportionality and least-harm test.

132. Framework Outcomes

Effective implementation of PROPORTIONALITY-001™ is intended to support:

✓ Stronger justification of institutional intervention
✓ Clearer legitimate objectives
✓ Better necessity testing
✓ Greater consideration of alternatives
✓ Stronger least-harm decision-making
✓ Reduced excessive restriction
✓ Reduced false binary reasoning
✓ Better safeguarding integration
✓ Better vulnerability assessment
✓ Reduced cumulative institutional harm
✓ Stronger control of restriction creep
✓ Greater use of de-escalation
✓ Better review of continuing interventions
✓ Stronger treatment of uncertainty
✓ Better protection against institutional self-interest
✓ More proportionate sanctions
✓ Stronger AI governance
✓ Better decision traceability
✓ Greater accountability
✓ Increased institutional trust

133. Governing Statement

Institutions possess power.

Power to restrict.

Power to exclude.

Power to sanction.

Power to investigate.

Power to intervene.

Power to protect.

Power to decide.

The existence of that power does not answer the most important governance question:

How much power was actually necessary?

A legitimate objective does not justify unlimited means.

A genuine risk does not automatically justify the most restrictive response.

A policy does not eliminate context.

Urgency does not eliminate accountability.

Protection does not justify avoidable secondary harm.

And institutional convenience should not be confused with necessity.

The SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™ therefore establishes a disciplined standard:

Identify the objective. Verify the authority. Establish the evidence. Test necessity. Examine alternatives. Identify the least-harm effective option. Assess vulnerability. Consider safeguarding. Measure cumulative impact. Examine reversibility. Balance benefit against burden. Mitigate unavoidable harm. Record the reasoning. Review continuing necessity. De-escalate when justification weakens.

Good governance does not ask only:

“Can we do this?”

It asks:

“Do we need to do this?”

Then:

“Do we need to do this much?”

And finally:

“Can we achieve the legitimate objective in a way that causes less avoidable harm?”

Because institutional restraint is not weakness.

It is a form of governance integrity.

Copyright and Intellectual Property Notice

© 2026 Samantha Avril-Andreassen. All Rights Reserved.

PROPORTIONALITY-001™ — The SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™ is an original governance proportionality, necessity, least-harm, safeguarding, institutional-intervention and accountability framework developed and authored by Samantha Avril-Andreassen, LLB (Hons), LLM, LPC, FRSA, Founder of SAFECHAIN™.

The original expression, structure, architecture, arrangement, terminology, proportionality methodology, least-harm architecture, classifications, principles, tests, matrices, registers, review mechanisms, maturity model and associated framework materials contained within this publication constitute proprietary intellectual property.

This includes, where original to this framework, the:

• SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™;

• PROPORTIONALITY-001™ designation;

• SAFECHAIN™ Proportionality Principle™;

• SAFECHAIN™ Necessity Principle™;

• SAFECHAIN™ Least-Harm Principle™;

• SAFECHAIN™ Proportionality Architecture™;

• SAFECHAIN™ Legitimate Objective Test™;

• SAFECHAIN™ Objective Drift™;

• SAFECHAIN™ Objective Stability Principle™;

• SAFECHAIN™ Intervention Evidence Principle™;

• SAFECHAIN™ Uncertainty–Intervention Principle™;

• SAFECHAIN™ Suitability Test™;

• SAFECHAIN™ Ineffective Restriction Risk™;

• SAFECHAIN™ Necessity Threshold™;

• SAFECHAIN™ Convenience Is Not Necessity™;

• SAFECHAIN™ Alternatives Principle™;

• SAFECHAIN™ Intervention Alternatives Record™;

• SAFECHAIN™ False Binary Risk™;

• SAFECHAIN™ Graduated Response Principle™;

• SAFECHAIN™ Serious Risk Exception™;

• SAFECHAIN™ Least-Harm Matrix™;

• SAFECHAIN™ Harm Transfer Risk™;

• SAFECHAIN™ Harm Transfer Principle™;

• SAFECHAIN™ Secondary Harm Principle™;

• SAFECHAIN™ Cumulative Impact Principle™;

• SAFECHAIN™ Cumulative Harm Review™;

• SAFECHAIN™ Vulnerability-Adjusted Proportionality Principle™;

• SAFECHAIN™ Differential Impact Test™;

• SAFECHAIN™ Safeguarding Proportionality Principle™;

• SAFECHAIN™ Protective Measure Balance™;

• SAFECHAIN™ Participation-before-Burden Principle™;

• SAFECHAIN™ Urgent Intervention Review Principle™;

• SAFECHAIN™ Temporal Proportionality Principle™;

• SAFECHAIN™ Proportionality Sunset Rule™;

• SAFECHAIN™ Escalation Proportionality Rule™;

• SAFECHAIN™ De-Escalation Duty™;

• SAFECHAIN™ Restriction Creep™;

• SAFECHAIN™ Restriction Boundary Principle™;

• SAFECHAIN™ Sanction Proportionality Principle™;

• SAFECHAIN™ Context Preservation Principle™;

• SAFECHAIN™ Policy-Is-Not-Proportionality Principle™;

• SAFECHAIN™ Discretion Accountability Principle™;

• SAFECHAIN™ Authority–Proportionality Distinction™;

• SAFECHAIN™ Proportionality Reasoning Trace™;

• SAFECHAIN™ Ethical Proportionality Question™;

• SAFECHAIN™ Interested Decision-Maker Risk™;

• SAFECHAIN™ Proportionality Challenge Principle™;

• SAFECHAIN™ Action–Inaction Balance™;

• SAFECHAIN™ Under-Intervention Risk™;

• SAFECHAIN™ Balanced Protection Principle™;

• SAFECHAIN™ Reversibility Principle™;

• SAFECHAIN™ Irreversibility Threshold™;

• SAFECHAIN™ Precautionary Governance Principle™;

• SAFECHAIN™ Burden Distribution Test™;

• SAFECHAIN™ Institutional Self-Protection Risk™;

• SAFECHAIN™ Harm Mitigation Requirement™;

• SAFECHAIN™ Least-Harm Decision Record™;

• SAFECHAIN™ Proportionality Balance Record™;

• SAFECHAIN™ Proportionality Integrity Classification™;

• SAFECHAIN™ Least-Harm Classification™;

• SAFECHAIN™ Continuing Necessity Test™;

• SAFECHAIN™ Intervention Effectiveness Review™;

• SAFECHAIN™ Harm Learning Loop™;

• SAFECHAIN™ Governance Proportionality Audit™;

• SAFECHAIN™ Governance Proportionality & Least-Harm Dashboard™;

• SAFECHAIN™ Algorithmic Proportionality Principle™;

• SAFECHAIN™ Automated Harm Amplification Risk™;

• SAFECHAIN™ Human Proportionality Accountability Principle™;

• SAFECHAIN™ Proportionality Culture Principle™;

• SAFECHAIN™ Leadership Proportionality Principle™;

• SAFECHAIN™ Proportionality Maturity Model™;

• SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Test™;

• and associated governance, safeguarding, intervention, restriction, sanction, evidence, reasoning, decision-making, vulnerability, accountability, monitoring, validation, remediation, assurance, oversight, certification, accreditation, training and implementation materials.

No part of this publication may be reproduced, copied, republished, adapted, translated, distributed, licensed, sublicensed, sold, commercially exploited or incorporated into another governance framework, proportionality methodology, least-harm system, safeguarding architecture, intervention model, risk-management methodology, decision-support system, audit programme, assurance methodology, certification scheme, accreditation programme, training product, consultancy methodology, artificial-intelligence system, analytics platform, software product, digital platform or derivative commercial offering without prior written permission from the applicable rights holder, except to the extent otherwise permitted by applicable law.

Publication, disclosure or public accessibility of PROPORTIONALITY-001™ does not grant any licence, permission or authority to reproduce, operate, commercially exploit, certify against, license or represent independent authorisation under the SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™.

No unauthorised person, organisation, consultant, auditor, investigator, assessor, reviewer, verifier, certification body, accreditation body, training provider, technology provider, software provider or other entity may represent itself as:

• SAFECHAIN™ authorised to conduct formal PROPORTIONALITY-001™ assessments;

• SAFECHAIN™ authorised to undertake official SAFECHAIN™ proportionality, necessity or least-harm reviews;

• authorised to award SAFECHAIN™ Proportionality Integrity Classifications™, Least-Harm Classifications™, Proportionality Maturity ratings or associated credentials;

• SAFECHAIN™ accredited to assess institutional proportionality or least-harm governance capability;

• authorised to certify conformity with PROPORTIONALITY-001™;

• authorised to issue SAFECHAIN™ proportionality, least-harm, governance or associated marks, seals, certificates, credentials or ratings;

• authorised to license PROPORTIONALITY-001™ or its proprietary methodologies to third parties;

unless such authority has been expressly and validly granted under applicable SAFECHAIN™ governance, certification, accreditation and licensing arrangements.

Any authorised implementation, proportionality assessment, least-harm review, monitoring, validation, remediation, audit, assurance, verification, certification, accreditation, oversight, training, licensing, consultancy, artificial-intelligence implementation, technology implementation or institutional application may be subject to separate written terms, competence requirements, safeguarding requirements, quality controls, intellectual-property conditions, confidentiality requirements, surveillance requirements, brand controls, independence requirements, impartiality requirements, evidence-integrity requirements and governance obligations.

A proportionality system, least-harm methodology, intervention architecture, safeguarding model, decision-support system, consultancy service, training programme, artificial-intelligence application, analytics platform or software product incorporating concepts contained within this framework must not be represented as an official SAFECHAIN™ system, methodology, assessment, certification, accreditation or authorised implementation unless the relevant authority has expressly been granted.

References within PROPORTIONALITY-001™ to generally established concepts including proportionality, necessity, legitimate objective, least restrictive means, harm minimisation, risk, safeguarding, vulnerability, precaution, reversibility, sanctions, procedural fairness, equality, human rights, review and accountability do not constitute claims of exclusive ownership over those underlying concepts.

Similarly, references to legislation, regulation, public standards, professional duties, recognised proportionality principles, safeguarding requirements, equality principles, human-rights principles, administrative-law principles, certification principles, accreditation principles or third-party intellectual property remain subject to the rights of their respective owners.

The proprietary claim relates to the original SAFECHAIN™ expression, selection, arrangement, architecture, terminology, classifications, methodologies, tests and framework materials developed by the author.

The use of the ™ symbol identifies names, concepts, methodologies and framework identifiers being asserted as proprietary brand or framework designations. It does not, by itself, constitute a representation that any particular designation has been registered as a trade mark in any jurisdiction.

Nothing within PROPORTIONALITY-001™ should be interpreted as legal advice, judicial guidance, statutory guidance, regulatory approval, governmental accreditation or a substitute for applicable legislation, regulation, professional standards, safeguarding requirements, equality obligations, human-rights requirements, contractual obligations or binding governance instruments.

Where PROPORTIONALITY-001™ is implemented within a regulated environment, applicable legislation, statutory obligations, regulatory requirements, professional standards and binding governance requirements take precedence where required.

SAFECHAIN™ proportionality assessments, Proportionality Integrity Classifications™, Least-Harm Classifications™, Proportionality Maturity ratings or governance conclusions should only ever be represented within the precise scope, organisational context, period, evidence base, methodology, intervention, affected population, reviewer independence, assumptions, limitations and conditions actually assessed.

A favourable proportionality assessment does not constitute a guarantee that an intervention is legally valid, ethically appropriate in every circumstance, risk-free or incapable of causing harm. Proportionality should be considered alongside authority, evidence integrity, safeguarding, conflict management, competence, procedural fairness and applicable legal requirements.

Similarly, identification of a proportionality weakness should not automatically be represented as proof of unlawfulness, discrimination, negligence, misconduct, irrationality, bad faith or breach of human rights. Such determinations may require separate legal, regulatory, professional or evidential assessment.

Any certification, accreditation or formal proportionality-assessment infrastructure subsequently established using PROPORTIONALITY-001™ should maintain appropriate safeguards concerning competence, independence, impartiality, evidence integrity, safeguarding, transparency, conflicts of interest, methodological integrity, privacy, human oversight, challenge, accessibility, reviewer competence and quality assurance.

Where serious governance or safeguarding failure occurs despite apparently documented proportionality controls, the governance architecture itself should be examined to determine whether objective drift, weak intervention evidence, false necessity, false binary reasoning, ineffective restriction, inadequate alternatives analysis, harm transfer, secondary harm, cumulative harm, vulnerability blindness, restriction creep, excessive sanctions, institutional self-protection, inadequate de-escalation, poor review, automated harm amplification or failure to identify a reasonably effective less harmful option contributed to the outcome.

Author and Framework Developer:
Samantha Avril-Andreassen, LLB (Hons), LLM, LPC, FRSA
Founder — SAFECHAIN™

Framework: The SAFECHAIN™ Governance Proportionality, Necessity & Least-Harm Framework™
Framework Reference: PROPORTIONALITY-001™
Framework Series: SAFECHAIN™ Governance Architecture Series — Governance Authority, Reasoning & Accountability
Version: 1.0
Year: 2026
Copyright: © 2026 Samantha Avril-Andreassen. All Rights Reserved.