A return to work letter is a formal written document issued by an employer to an employee confirming the arrangements for their return to work following a period of absence. In England and Wales, it is an important document both from a practical HR management perspective and from a legal compliance standpoint, as it creates a written record of the adjustments, pay arrangements, and conditions agreed for the employee's return.

Return to work letters are used across many different types of absence. Long-term sickness absence is perhaps the most common trigger — where an employee has been absent for four weeks or more, a structured return to work letter helps both parties understand what is expected and what support will be provided. Statutory leave is another major category: employees returning from maternity leave, paternity leave, shared parental leave, or adoption leave have specific statutory rights under the Employment Rights Act 1996 and associated regulations, and a written letter confirms how those rights will be fulfilled.

The Employment Rights Act 1996 is the primary statute governing statutory leave rights on return. Sections 71 to 75 and the Maternity and Parental Leave etc. Regulations 1999 establish that an employee returning from ordinary maternity leave (the first 26 weeks) has the right to return to the same job. An employee returning from additional maternity leave (weeks 27 to 52) has the right to return to the same job or, if that is not reasonably practicable, to a suitable alternative role on terms and conditions no less favourable. Equivalent rights apply for adoption and shared parental leave.

The Equality Act 2010 is central to the management of disability-related absence and mental health-related absence. Under section 20 of the Act, employers have a duty to make reasonable adjustments where a provision, criterion, or practice (PCP) — or a physical feature of the workplace — places a disabled person at a substantial disadvantage compared to non-disabled persons. Long-term absence or repeated short-term absences related to a disability may trigger this duty. The return to work letter is an appropriate place to set out the adjustments that have been agreed.

The ACAS Code of Practice on Discipline and Grievance does not directly govern return to work letters, but the ACAS guidance on managing attendance and absence is widely followed by UK employers and Employment Tribunals. A return to work meeting — the brief conversation between an employee and their manager on or shortly after the first day back — is a key tool for managing absence and is recommended by ACAS. The letter often serves to confirm the arrangements agreed at that meeting, or to set up the meeting itself.

From a legal risk perspective, a well-drafted return to work letter protects the employer by creating a clear written record that the return was managed in accordance with the employee's statutory rights and any agreed adjustments. This is important evidence if the employee later brings a claim for unfair dismissal, discrimination, or breach of contract. It also demonstrates to an Employment Tribunal that the employer followed a fair and reasonable process.

A return to work letter is needed whenever an employee returns from a significant period of absence, but the situations where it is legally most important are those involving statutory leave, long-term sickness, and disability-related absence.

For maternity, paternity, adoption, and shared parental leave, a return to work letter should be issued before the employee returns, confirming their right to return to their role (or a suitable alternative), their pay and benefits on return, any accrued annual leave, and any changes that have taken place during their absence. This helps prevent disputes about what was agreed and demonstrates that the employer has fulfilled its statutory obligations.

For long-term sickness absence — typically defined as four or more consecutive weeks of absence — a return to work letter is best practice and is recommended by both ACAS and occupational health professionals. The letter should address the phased return arrangement (if one has been agreed), any reasonable adjustments under the Equality Act 2010, occupational health involvement, and the return to work meeting. Where the absence is disability-related, documenting the adjustments in writing is particularly important, as it provides evidence of the employer's compliance with the duty to make reasonable adjustments.

For shorter sickness absences, a formal return to work letter may not be necessary, but a return to work meeting is still good practice under the ACAS guidance on managing short-term absence. The meeting should be documented, and any agreed actions should be confirmed in writing.

Return to work letters are also relevant after bereavement leave, carer's leave, and other authorised absences. The Carer's Leave Act 2023 introduced a statutory right to one week of unpaid carer's leave per year for employees in England and Wales with a qualifying caring responsibility. While the employer is not required to issue a formal letter for every return from carer's leave, documenting the arrangements for longer absences is good practice.

Where the employee is returning following a period of garden leave — when they were asked to stay away from the workplace during their notice period — a return to work letter is not typically needed, as garden leave is not an absence in the conventional sense. However, if the employee is reinstated after garden leave in unusual circumstances, a letter confirming the terms of their return is appropriate.

Employers in industries regulated by the Financial Conduct Authority, Ofsted, the Care Quality Commission, and other regulatory bodies may have additional documentation requirements when managing employee absence and return to work, and the letter should be designed to meet those requirements.

A comprehensive and legally sound return to work letter for England and Wales should address the following key elements.

Clear identification of the parties and absence: The letter must clearly state the employee's full name, job title, and department, the type of absence (sickness, maternity leave, etc.), the absence start and end dates, and the confirmed return date. This creates an unambiguous record that can be referred to in the event of any later dispute.

Right to return and role confirmation: For employees returning from statutory leave, the letter must confirm their right to return to their substantive role under the Employment Rights Act 1996 and associated regulations, or — where returning to the same role is not reasonably practicable — to a suitable alternative role on no less favourable terms. For sickness absence, confirmation that the employee is returning to their substantive role (or a role agreed as part of a reasonable adjustment) should be included.

Working hours on return: The letter should confirm whether the employee is returning on standard contracted hours, adjusted hours, or as part of a phased return arrangement. For phased returns, the plan should set out clearly how hours will increase over time and when full hours are expected to resume. Where a flexible working request has been agreed, the revised hours should be confirmed in the letter.

Phased return to work: Where a phased return has been recommended by a GP or Occupational Health practitioner, or agreed between employer and employee, the letter should set out the full phased return schedule, including the hours and days to be worked in each phase and the pay arrangement for each phase. Employers are not legally required to pay full salary during a phased return where the employee works reduced hours — but many choose to do so for a reasonable period as a goodwill gesture and to facilitate recovery.

Reasonable adjustments: For disability-related absences, the letter must document the reasonable adjustments agreed under section 20 of the Equality Act 2010. This may include equipment provision, reallocation of specific tasks, changes to working hours or location, or a temporary reduction in targets. Documenting adjustments in writing is essential evidence of compliance with the statutory duty.

Pay and benefits on return: The letter should confirm the employee's salary on return and address any pay increases that occurred during the absence. For statutory leave, employees are entitled to the benefit of any pay rises that would have applied had they been at work. Accrued annual leave during the absence period should also be addressed — employees continue to accrue holiday under the Working Time Regulations 1998 during sickness absence and statutory leave, and any leave that could not be taken due to absence may need to be carried over.

Occupational health and employee assistance: Where an Occupational Health referral has been made or is recommended, the letter should confirm the arrangements and reassure the employee that the OH assessment is focused on support, not medical disclosure. Many employers also remind returning employees of the Employee Assistance Programme (EAP) as part of the return to work letter.

Return to work meeting: The letter should confirm whether a return to work meeting has been arranged, the date and time of the meeting, and the supportive (non-disciplinary) nature of the meeting. This is consistent with ACAS guidance and good employment practice.

Signature of acknowledgement: The employee should be invited to sign and return a copy of the letter to confirm they have read and understood the arrangements. This creates a documented record of agreement.