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Underpayment Formal Complaint Letter Template
How to formally complain to your employer about being paid below minimum wage — what to include, your legal rights, and a free letter generator.
← All Letter Templates · Minimum Wage · 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 formally complain to your employer about being paid below minimum wage, 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 underpayment formal complaint should include, plus a free tool to generate yours.
What this letter needs to cover
- State the correct NMW rate for the workers age and category
- Calculate the underpayment with figures
- State this is unlawful under the National Minimum Wage Act 1998
- Request immediate correction and repayment of arrears
- Warn that failure to correct may result in a report to HMRC
See our full letter template library for related templates, or use our free checkers for guidance specific to your situation.
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