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What an offer letter is and why it matters
An offer letter confirms in writing that an employer wishes to engage a particular candidate for a specific role. It usually summarises the headline terms — the job title, start date, working arrangements and any conditions — and asks the candidate to accept. It often precedes, and is later supported by, a full employment contract.
Its purpose is to move from a verbal decision to a clear, documented commitment. For the candidate it provides certainty to plan around and a basis on which to resign from a current role; for the employer it records the offer made and any conditions attached, such as references or right-to-work checks.
When an offer letter is used
- After a successful interview process when a candidate has been selected.
- To confirm a verbal offer in writing before the contract is prepared.
- When an offer is conditional on checks such as references or right to work.
- When a candidate needs written confirmation to resign from another role.
- For internal moves, such as a promotion or transfer, where a fresh offer is appropriate.
What a clear offer letter includes
- The candidate name and the job title being offered.
- The proposed start date and the reporting line or location.
- A summary of working hours, pattern and any remote or hybrid arrangement.
- Any conditions the offer depends on, such as references or right-to-work checks.
- How and by when the candidate should respond to accept.
- A note that a full employment contract will follow or is enclosed.
- The name and contact details of the person making the offer.
- A space for the candidate to sign and date their acceptance.
Common mistakes to avoid
- Making an unconditional offer before required checks are complete.
- Leaving the start date, hours or conditions vague or open to interpretation.
- Failing to state a clear deadline for the candidate to respond.
- Treating the offer letter as a substitute for a full employment contract.
- Sending an offer that contradicts what was discussed at interview.
- Not keeping a record of the offer made and the candidate response.
Best practices
- Keep the tone welcoming while being precise about the terms offered.
- State clearly which conditions, if any, the offer depends on.
- Give the candidate a reasonable window to consider and respond.
- Confirm that a full contract will set out the complete terms.
- Export the signed offer letter to PDF so both sides keep the same agreed record.
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