You have been sent for something called a functional abilities evaluation, nobody has explained what it is, and the letter says to set aside most of a day. That combination is unsettling on its own.
A functional abilities evaluation is a structured physical test of what your body can actually do, usually run by an occupational therapist or a physiotherapist over three to six hours. You lift, carry, reach, sit, stand, grip and walk while someone measures and records every result. The report compares what you managed against the physical demands of your job.
It is not a treatment appointment and it is not a medical examination. Nobody will diagnose you, prescribe anything or tell you how to get better. The whole purpose is measurement.
Who orders a functional abilities evaluation?
Usually an insurer, a workers' compensation board, an employer or your own lawyer. In a workplace claim it often arrives when there is a disagreement about whether you can return to your job or to modified duties. In a motor vehicle claim it usually appears when income replacement or a tort claim turns on what you can physically do.
Whoever ordered it is who receives the report. Ask who that is before you go, because it tells you what the assessment is being used to decide.
How long does a functional abilities evaluation take?
Most run three to six hours with breaks. Some are split across two days, which is usually a better design because it captures how you recover overnight.
Wear clothes and shoes you could work in. You will be moving for most of the day. Bring water, any medication you take during the day and a snack, because a long assessment on an empty stomach measures your blood sugar as much as your shoulder.
What happens during a functional abilities evaluation?
The day usually runs in this order.
An intake interview. Your injury history, your symptoms, your medications and a detailed description of what your job involves. Be specific about the job. An assessor who thinks you are a general labourer will test different things than one who knows you spend six hours a day overhead.
Questionnaires. Pain scales and self-reported ability forms. These are compared against your measured performance later, so answer them as your ordinary week, not your worst day or your best hour.
Baseline measurements. Range of motion, grip strength, blood pressure and pulse. Your heart rate is often tracked all day.
Task testing. Lifting from floor to waist and waist to shoulder, carrying, pushing, pulling, climbing stairs, kneeling, crouching, reaching overhead, fine hand work and sustained sitting or standing. Weights increase until you or the assessor stops.
Endurance testing. Walking, a treadmill or a step test.
What is effort testing in a functional abilities evaluation?
This is the part almost nobody explains, and it is the part that decides how your report reads.
Built into the day are consistency measures. The same movement is tested more than once, in different forms and at different hours, and your results are compared against each other and against your heart rate. The assessor is checking whether your performance holds together.
Two instincts distort it, and both are honest instincts.
Some people hold back, worried that a good result will be used to say they are fine. Inconsistent effort gets flagged in the report, and a flag about reliability can undermine everything else in your file, including things that are genuinely true.
Others push far past what they would ever do at work, because a lifetime of being a hard worker does not switch off in a testing room. That produces a number you cannot repeat on Monday, and that number becomes your capacity.
The useful instruction is narrower than try your best. Work at the level you could sustain for a full shift, five days running. Stop when you reach the point where you would stop at home. Then say out loud why you stopped, and make sure it gets written down: pain, fatigue, dizziness, numbness or fear of injuring yourself further.
What are you allowed to do during the assessment?
More than most people use.
You can ask for a break at any point. You can say a movement hurts while you are doing it rather than afterwards. You can decline a task you believe will injure you, and the right way to do that is to explain rather than refuse flatly. Saying "I am not going to lift that from the floor because that is the movement that put me here" reads very differently in a report than a blank refusal.
You can ask what a test measures before you agree to it. You can ask for the room temperature to change, for a chair, or for your medication timing to be accommodated. None of this counts against you.
What happens after a functional abilities evaluation?
The assessor writes a report describing your measured capacities, whether your effort was judged consistent, and how your results compare to your job demands. It goes to whoever ordered it. You are usually entitled to a copy, so ask.
Here is the part the report almost never captures, and the part that matters most to you.
A full day of maximal testing very often produces a flare. Pain, stiffness, swelling, exhaustion or a headache that arrives that evening and can last two or three days. The assessment measured what you could do on the day. It did not measure what doing it cost you.
That cost is the difference between capable of lifting once and capable of working. It is real evidence and almost nobody records it, because the assessment is over and everyone has moved on.
What should you write down after a functional abilities evaluation?
Start the same evening and continue for three days.
- The date, the assessor's name and profession, and who ordered the assessment
- What time you arrived and what time you finished, including breaks
- Which tasks you stopped, why you stopped and whether you said so out loud
- Anything you declined and the reason you gave
- How you felt that evening, the next morning and each of the following two days
- What you could not do in those days that you normally can, naming the specific task
Give the record to your treating provider and to anyone representing you. A three-day account of the aftermath, written at the time, is the single most useful document you can produce about an assessment you had no control over.
The Medical Appointment Tracker, Free Starter Edition gives you a page to fill in the same evening. The Pain and Symptom Tracker carries the days afterwards, which is where the real evidence sits.
Read next
- What happens at an independent medical examination
- What happens at a physiotherapy appointment
- What to do after a workplace injury in Ontario
Last verified August 2026. This article is general information for people in Canada and is not medical or legal advice.