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Complaint of Dismissal for Union Activity Letter Template
How to challenge an automatically unfair dismissal connected to trade union membership — what to include, your legal rights, and a free letter generator.
← All Letter Templates · Trade Union Rights · Last updated 18 August 2026
This is free rights guidance, not legal advice. For advice specific to your situation, see our About page or contact Citizens Advice.
If you need to challenge an automatically unfair dismissal connected to trade union membership, a written letter is the recommended first step — it creates a clear record and shows you're pursuing the matter formally. Below is what a strong complaint of dismissal for union activity should include, plus a free tool to generate yours.
What this letter needs to cover
- State the dismissal is automatically unfair under section 152
- Describe the union activities
- Confirm there is no qualifying period for this claim
- Warn of tribunal claim
- Invite reinstatement or ACAS conciliation
See our full letter template library for related templates, or use our free checkers for guidance specific to your situation.
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