Constructive dismissal is where an employee resigns because of their employer's fundamental breach of contract — and the resignation is legally treated as a dismissal. Common triggers include unpaid wages, unilateral pay cuts, harassment not addressed by management, forced relocation without contractual right or systematic undermining of trust and confidence. To succeed, you must resign promptly after the breach + not affirm the changed terms by continuing to work. This guide covers the legal test, common grounds + how to file a tribunal claim.
Verified against 1 official sources · Last reviewed 14 June 2026
Employee resigns without delay (doesn't affirm the change by continuing)
Common grounds
Unpaid wages / late pay repeatedly
Unilateral pay cut without contractual right
Demotion without contractual power
Bullying / harassment not addressed
Health + safety failures
Forced relocation without mobility clause
Fundamental breach of trust + confidence (Malik v BCCI)
Not enough
Minor grievances
Reasonable management instructions
Justified performance criticism
Contractual changes lawfully exercised
Process
Identify the breach + gather evidence
Consider raising grievance first (usually strengthens claim)
Resign promptly + state reason in writing
ACAS Early Conciliation
Employment Tribunal ET1 within 3 months
Qualifying period
Same as unfair dismissal:
- Ordinary: 2 years' continuous service
- Automatic (e.g. discrimination, whistleblowing): day 1
Compensation
Same as unfair dismissal — basic award + compensatory award + discrimination uplift where relevant.
Grievance first?
Not legally required but:
- Strengthens claim (shows breach was serious)
- May result in resolution
- ACAS uplift on tribunal award if code not followed
Wait for grievance outcome, then decide whether to resign — but don't delay too long or breach is 'affirmed'.
Related right — 'harshness of dismissal'
If tribunal finds ordinary unfair dismissal but employee was partly at fault, compensation can be reduced by contributory conduct percentage.
In short
Constructive dismissal = resign because of employer's fundamental breach. Must resign promptly. Same tribunal claim as unfair dismissal.
Frequently asked questions
How quickly do I need to resign for constructive dismissal?
Promptly after the breach. Delay may be interpreted as affirmation of the changed contract.
Do I need to raise a grievance first?
Not legally required, but strengthens the claim + may resolve the issue. Employer non-compliance with ACAS Code allows uplift.
Can I claim unpaid wages as constructive dismissal?
Yes — unpaid or systematically late wages is a fundamental breach of contract.
UK monthly budget planner — A workable UK monthly budget planner: confirm your real net pay, list fixed essentials, list variable essentials, set a discretionary cap, set a savings target. Total must equal net pay. Use 50/30/20 as a starting guide, adapt for your housing situation.
More on related topics
Notice periods — UK notice = greater of statutory (1 week + 1/year up to 12) or contractual. PILON + garden leave options.
Redundancy consultation — Individual consultation always required. Collective: 30 days (20-99), 45 days (100+). HR1 to Redundancy Payments Service.
Unfair dismissal — Unfair dismissal claim = 2 years service (ordinary) or day 1 (automatic). ACAS → tribunal within 3 months.
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Last reviewed: 14 June 2026.
Next review due 14 December 2026.
Disclaimer: This page provides general information based on published HMRC and gov.scot figures. It is not personal tax or financial advice. For your specific situation, please consult a qualified accountant or contact HMRC directly.