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Fitness-for-Duty Letter Template
A fitness-for-duty letter, or fit-to-work letter, answers an employer’s question about a specific job: whether your patient can safely do each essential duty, with what limits, and until when. Copy the template, see a bus driver and a nurse example, and know when to say that an occupational or independent evaluation is the better route.
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- Two filled examples
Blank fitness-for-duty letter template
FreeFITNESS-FOR-DUTY LETTER [Clinic name] [Address] [Phone] Date: [Date of letter] To: [Employer, or its occupational health contact] Re: [Patient's full name] Date of birth: [Date] Job title: [Job title] Your request: [Date of the employer's request, and any reference number] [Patient name] asked me to answer this request and agreed to what this letter shares. QUESTION ASKED [The employer's question, in its own words] BASIS OF MY OPINION My role: [Treating physician, nurse practitioner, or other role, and since when] Assessed: [Date, and in person or by video] What I reviewed: [History, examination, tests, and records that bear on the duties] Job information: [The job description or duty list the employer sent, or the patient's own description] EACH ESSENTIAL DUTY [Duty 1]: [Fit, fit with limits, or not fit, and until when] [Duty 2]: [Fit, fit with limits, or not fit, and until when] [Duty 3]: [Fit, fit with limits, or not fit, and until when] Limits: [Each limit in concrete terms: how much, how often, and its end date] OVERALL Opinion: [Fit for the listed duties, fit with the limits above, or not fit for them at present] From: [Date] Until: [End date of any limits, or the review date] Review: [Date I will reassess] OUTSIDE MY ASSESSMENT [Duties or standards I can't assess, e.g. a licensing medical standard, a functional capacity test, or a specialist evaluation, and who can assess them; or none] MEDICAL INFORMATION [None beyond this letter, or what the patient agreed to share and why the duties need it] [Your name, credentials] [License or registration number] [Signature] [Phone or email for questions about this opinion]
Use it for
- Return after a long medical leave
- Safety-sensitive jobs
- After an incident at work
- Employer safety or performance concerns
- Leave certifications with a duty list
Two filled examples. Every part, filled in.
Each one follows the template. Use them to judge how much detail every part needs.
Fitness-for-duty letter: bus driver after a fainting episode
Family physician to the transit company’s occupational health; tests not yet complete
Question asked
Occupational health wrote on Thursday, October 8, 2026, asking whether this 52-year-old bus operator can safely do 3 duties: driving a bus in passenger service, moving buses in the depot yard, and the pre-trip inspection of a parked bus. It also asked about temporary office work at the depot.
Basis of the opinion
I have been her family physician for 9 years. She fainted while standing in the depot break room on Monday, October 5, before her shift, and was seen in the emergency department that day. I assessed her in person on Friday, October 9, 2026, took her history, examined her, and reviewed the emergency department records. A 14-day heart rhythm monitor started on October 9, and she sees a cardiologist on Thursday, October 29.
Driving duties
Driving in passenger service and moving buses in the yard: not fit at present. Fitness to drive a commercial vehicle after a loss of consciousness is decided under the medical standard for her license, which may need an exam by an examiner the licensing authority recognizes. Her tests aren’t complete, so I can’t give that opinion. With her consent, I will share the cardiology findings with that examiner.
Other duties
Pre-trip inspection of a parked bus, and temporary depot office work: fit from Tuesday, October 13, 2026, with 1 limit until the review: no ladders or work at heights.
Medical information
She agreed that the letter can say she lost consciousness on October 5, which her employer already knows, and which tests are under way. No results and no other conditions are included.
Review
I will write again after her cardiology visit on October 29, 2026. The decision on driving rests on the licensing standard, not on this letter.
Fitness-for-duty letter: hospital nurse after 8 weeks of medical leave
Family physician to hospital occupational health, after mental health leave; diagnosis not shared
Question asked
On Monday, October 19, 2026, occupational health asked whether this 41-year-old registered nurse on a medical unit can return to her essential duties after 8 weeks of medical leave. It listed 4: assessing and monitoring patients, giving medications, including controlled drugs, acting as charge nurse, and 12-hour day and night shifts in rotation.
Basis of the opinion
I have seen her every 2 weeks during her leave, and assessed her in person on Tuesday, October 20, 2026. Her concentration and alertness are back to her usual level, and nothing in her treatment affects her alertness at work. I used the hospital’s duty list.
Each essential duty
Assessing and monitoring patients: fit. Giving medications, including controlled drugs: fit. Acting as charge nurse: fit. 12-hour shifts: fit for day shifts; no night shifts for 4 weeks.
Overall opinion
Fit to return to her usual role on Monday, October 26, 2026, with 1 limit: day shifts only, until Sunday, November 22, 2026. The limit gives her a regular routine in her first weeks back.
Medical information
Not included, at her request. The letter says she was on medical leave, answers each duty, and gives the limit and its end date.
Review
I will see her on Thursday, November 19, 2026, and confirm in writing before November 23 whether she can go back to night shifts.
When an employer can ask about fitness for duty. Checked October 2026.
Human rights, disability, and leave laws limit when an employer can ask for a medical opinion on fitness, and how much it can learn. Collective agreements, licensing standards for safety-sensitive jobs, and other states and provinces can add their own rules.
United States, federal
Under the EEOC’s ADA guidance, an employer may ask an employee disability-related questions or require a medical exam only when it is job-related and consistent with business necessity: generally, a reasonable belief, based on objective evidence, that a medical condition will impair the ability to do essential functions, or that the employee will pose a direct threat. After a medical leave, questions must be limited to what’s needed to assess the ability to work.
United States, FMLA leave
An employer with a uniformly applied policy can require a certification from the employee’s health care provider that they are able to resume work, about the condition that caused the leave only. If it gave the employee a list of essential functions with the designation notice, the certification must address them. The employer may contact the provider to clarify and authenticate it, but may not delay the return to do so or require a second opinion.
United States, return with restrictions
The EEOC says requiring an employee with a disability to be “100%” healed, with no medical restrictions, violates the ADA if they can do the job with or without reasonable accommodation, unless that would cause undue hardship. A doctor’s note releasing an employee with restrictions can be a request for accommodation, and the employer may ask why the restrictions are needed and how long they will last.
Ontario
The OHRC says an employer may be able to ask for medical documentation to confirm fitness to work when there is sufficient objective evidence of a legitimate concern. It can generally expect to learn the person’s limitations or needs, whether they can do the essential duties with or without accommodation, and the accommodation needed, but usually not the diagnosis, cause, symptoms, or treatment.
Ontario, independent medical exams
Where a person’s needs are unclear, they may be asked to attend an independent medical exam, but only with an objective basis for concluding that the first medical evidence is inaccurate or inadequate. The OHRC’s example is a railroad engineer, a safety-sensitive job, who was cleared by her doctor after a serious concussion but then couldn’t focus, reacted slowly, and made repeated mistakes.
Ontario, workplace injuries
After a workplace injury, only the employer or the worker should start a request for the WSIB Functional Abilities Form, which they use to plan a return to suitable work. It gives functional abilities only, with no diagnostic or confidential information. The WSIB pays a set fee for its form; if an employer uses its own form instead, the employer pays you directly.
What goes in each part.
Question asked
A fitness-for-duty letter answers a question. Quote it, so the reader can see exactly what you answered.
- The employer’s question, in its own words
- The date of the request, and any reference number
- The job title, and the duty list or job description that came with it
Avoid: Answering a question no one asked, such as how the patient is doing in general.
Basis of the opinion
What your opinion rests on, so the employer can judge how far it reaches.
- Your role, and how long you have treated the patient
- The date you assessed them, and in person or by video
- The history, examination, tests, and records you used, where they bear on the duties
- The job information you relied on
Avoid: An opinion on a job you haven’t seen described. Ask for the job description or duty list first.
Each essential duty
One line for each duty the employer listed. This is the part that makes the letter a fitness-for-duty letter.
- Fit, fit with limits, or not fit, for each duty
- Each limit in concrete terms: how much, how often, how long
- When each limit ends, or when you will review it
Avoid: One line saying “cleared to return” in reply to a list of duties. It often brings a second request.
Overall opinion and review
The answer in one line, the dates it covers, and when you will look again.
- Fit, fit with limits, or not fit at present
- The date it takes effect
- The end date of any limits
- Your review date, or what would make you reassess sooner
Avoid: “Not fit until further notice.” Give a review date.
Outside your assessment
Where your opinion stops. For safety-sensitive work, this line protects the patient, the public, and you.
- Licensing or regulatory medical standards, such as for commercial driving, that need their own examiner
- Tasks that need a functional capacity test or a worksite assessment
- Psychological fitness for armed or high-risk roles, which needs a specialist evaluation
- Who can assess what you can’t
Avoid: Clearing a safety-critical task you couldn’t evaluate, to be helpful.
Medical information
Usually none beyond the duty answers. Employers generally need to know what the patient can do, not why.
- No diagnosis, unless the patient agrees and the duties need it
- No findings or history unrelated to the job
- That the patient asked for the letter and agreed to what it shares
Avoid: Attaching records or the chart in reply to a fitness question.
Common mistakes, and how to avoid them.
One “fit” for a list of duties
When the employer listed duties, answer each one. A single line saying the patient is cleared often brings a second request, or an exam by someone else.
Clearing what you couldn’t assess
If a duty turns on a licensing medical standard, a functional test, or a specialist evaluation, say so, and say who can assess it.
The diagnosis by default
The employer needs to know whether the patient can do the duties, and with what limits. Add a diagnosis only if the patient agrees and the duties need it.
Findings unrelated to the job
Leave out conditions, history, and results that don’t bear on the listed duties. A fitness opinion isn’t a medical report.
Limits with no end
Give an end date for each limit, or the date you will review it. Otherwise a short-term limit can become permanent by default.
Writing as advocate, not assessor
Knowing the patient well helps, but the employer is asking about safety. If you can’t judge the question objectively, say so, and suggest an occupational or independent evaluation.
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Frequently asked questions.
What is a fitness-for-duty letter?
A letter from a clinician that answers an employer’s question about whether a worker can safely do their job, often after a leave, an incident, or a change in performance. It gives an opinion on each essential duty, with any limits and how long they last.
What should a fit-for-duty letter from a doctor include?
The question the employer asked, what your opinion rests on, a fit, fit-with-limits, or not-fit answer for each listed duty, the dates, a review date, and what you couldn’t assess. Sign it with your name, credentials, and license or registration number.
Is a fit-to-work letter the same thing?
Usually, yes. “Fit to work,” “fit for duty,” and “fitness for duty” letters answer the same question. If the employer sent a list of duties, answer each one, whatever the letter is called.
How is it different from a return-to-work note?
A return-to-work note clears a patient to go back after time off, with general restrictions. A fitness-for-duty letter answers a specific question about specific duties, often in a safety-sensitive job, and says where your assessment stops.
Does a fitness-for-duty letter need the diagnosis?
Usually not. Employers are generally entitled to know whether the worker can do the job and with what limits, not the diagnosis. Include it only with the patient’s consent, and only when the duties need it.
Should the treating clinician write it, or an independent examiner?
You can answer for what you can assess. When the question turns on a licensing medical standard, job-specific testing, a psychological evaluation for a high-risk role, or a dispute about your opinion, an occupational or independent evaluation is the better route. Say so in the letter.
Show all questions
What about safety-sensitive jobs, such as driving or operating machinery?
Many have their own medical standards, set by a licensing body or regulator, and some need an exam by a designated examiner. Say what you assessed, and defer to that standard for the decision it governs.
What if the employer didn’t send a job description?
Ask for one, or for a list of the essential duties, before you give an opinion. If you write without it, say that you relied on the patient’s description of the job.
Can an employer ask for a fitness-for-duty letter?
In many places, yes, when there is a real, job-related reason to question whether the worker can do the job safely, or when a leave policy requires a certification to return. What it can ask is usually limited to what bears on the job. Check the rules where your patient works.
Is this fitness-for-duty letter template free?
Yes. Copy it, or download it as a Word or text file. No account needed.
Can Vero write a fitness-for-duty letter from my visit?
Yes. Paste this template into Vero, and it drafts the letter from your visit, duty by duty, with the limits and dates you discussed. Review and edit it, then export it to PDF or Word, print it, or email it.
More templates, and guides.
Doctor’s note template
For work or school: the visit, the dates off, the return, and any limits.
Return-to-work note template
To an employer: full or modified duties, the restrictions, how long they last, and the review date.
Medical leave letter template
To an employer or leave administrator: when the leave starts, how long it lasts, the review date, and what the return needs.
Workplace accommodation letter template
To an employer: what the condition limits, the change that would help, how long, and answers to the employer’s questions.
Pregnancy accommodation letter template
To an employer: the pregnancy-related limitation, the change needed at work, and how long it lasts.
Vero Documents
Fill employer, insurer, and leave certification forms from the visit and the chart.
Medical forms library
Leave, disability, and functional abilities forms, with official links and how to file.
Your template. Filled in from the visit.
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