Cleared for work is not the same as ready for work

Three words that decide a return

The words "released to full duty" end a lot of conversations that should keep going. The physicians who literally wrote the book on work ability — the AMA Guides to the Evaluation of Work Ability and Return to Work (Talmage, Melhorn & Hyman, 2nd ed., 2011) — separate every return-to-work decision into three distinct things, and the distinction is worth two minutes of any adjuster's, case manager's or physician's time:

Risk: what the physician certifies

Risk is the chance that work activity makes the injury worse. It's a medical judgment built from the diagnosis, the healing timeline and the physician's experience — and it's exactly what a physician should decide. When the release says "may return to work," it means it is medically safe for this worker to try.

That judgment is necessary. It just isn't sufficient — because it's made in an exam room, about a job that happens somewhere else. The release doesn't claim the worker can lift what the job lifts or stand as long as the job requires. Read carefully, it never said that. Per the AMA Guides framework, a release addresses risk, and risk only.

Capacity: what can be measured

Job demands are numbers — weights, frequencies, heights, positions, durations. A worker's current ability is also a number, if someone measures it. After weeks or months away from physical work, capacity is usually below the job: strength and endurance fade with disuse, and no release, however carefully written, can see that gap from the exam room.

Capacity is the leg of the triad that objective testing exists for. Either it's measured before the return date, or it's discovered on the job — on company time, on the claim.

Tolerance: what only time reveals

The hardest point in the Guides is this one: tolerance — the ability to sustain an activity, not just perform it once — is not scientifically measurable. Pain, fatigue and symptoms accumulate across a shift and across a week in ways no single test can capture. A worker can pass every test on Monday and still be unable to string together five eight-hour days.

That's not a reason to give up on measurement. It's a reason to measure over time: the closest thing to a tolerance measure is serial observation — the same worker, progressively heavier and longer job tasks, session after session, with the results written down.

Where the gap shows up

When a release is treated as proof of readiness, the gap between "cleared" and "able" surfaces in familiar ways: a return attempt that collapses inside the first weeks, a flare-up or reinjury that reopens medical treatment, a claim that had a discharge date and now has neither a working claimant nor a closing path.

And the meter runs. The occupational-medicine literature is consistent that work is generally good for health and that long absence is associated with worse physical and mental health (Waddell & Burton, 2006), and that the absence itself does damage — with the first days and weeks mattering most (ACOEM, 2006). The New York State Workers' Compensation Board puts a number on where drift leads: only about half of injured workers return to work after a six-month absence, and fewer as the absence grows. A failed return isn't a neutral event — it burns weeks and pushes the case toward those odds.

Closing the gap: measure it, then rebuild it

The gap between cleared and ready is closed with data, and the data comes in two forms.

A capacity snapshot. A functional capacity evaluation measures demonstrated ability — lifting, carrying, pushing, pulling, positional tolerance — against the job's own demands, with consistency-of-effort checks woven through a standardized protocol. We'll be as honest about the tool as we are about our numbers: the research finds the reliability of established FCE protocols is generally moderate-to-high, while a one-day test's ability to predict sustained return to work is mixed (De Baets et al., 2018; Gross & Battié, 2004, 2005) — precisely because one day cannot measure tolerance. An FCE is a rigorous snapshot of capacity. It is not a lie detector, and it is not a crystal ball.

Serial program data. What a snapshot can't do, a program can. Work conditioning and work hardening rebuild capacity with graded versions of the worker's own job tasks — and every session is a data point. Across 1,070 completed programs at our clinics, the median program runs about 37 days and 20 attended visits at roughly 3 sessions per week, with roughly 9 in 10 scheduled sessions kept (how we derive our numbers →). Weeks of observed, progressively loaded work is the nearest thing to a tolerance measure that exists — a documented track record instead of a hopeful guess.

What this means for your file

• Read a release for what it is. A full-duty release with no functional data behind it is a risk statement, not readiness evidence. ACOEM's advice to everyone managing a claim: ask the physician about functional ability, not just a date.
• Get the job's demands on paper. A job description turns "can they work?" into a list of measurable questions — and lets an FCE report answer demand by demand, met or not met.
• Released but untested? Order the FCE — capacity on paper, report sent within 72 hours of the evaluation.
• Tested but short of the job? That's what work conditioning and work hardening are for — rebuild the capacity, document the tolerance, entrance-tested and exit-tested.
• Long absence on the clock? Move early. The return-to-work odds decay with time out, and the first weeks matter most.

Questions we hear about releases and readiness

What does a full-duty release actually certify?

A release is a physician’s judgment about risk — that returning to work is not medically dangerous for this worker. Under the framework in the AMA Guides to the Evaluation of Work Ability and Return to Work, that is all it addresses. It does not measure whether the worker currently has the strength and endurance the job demands, and it cannot predict whether the worker can sustain those demands shift after shift.

If the physician has already released my claimant, why order an FCE?

Because the release answered the risk question and left the capacity question open. A functional capacity evaluation measures what the worker can demonstrably do — lifting, carrying, pushing, pulling, positional tolerance — and states it in the same terms the job is defined in. Give us a job description and the report shows whether each demand is met, demand by demand, before the return date instead of after a failed one.

What is the difference between capacity and tolerance?

Capacity is what a worker can measurably do today — it can be tested in a day. Tolerance is what a worker can sustain over days and weeks of full shifts, and the AMA Guides are blunt that tolerance is not scientifically measurable in an exam. The closest thing to a measure of tolerance is serial observation: watching the same worker perform progressively heavier, longer job tasks across a structured program, and documenting what holds.

Can an FCE prove a worker is faking?

No — and be wary of anyone who says theirs can. An FCE is a measurement of demonstrated ability against job demands, with consistency-of-effort checks built into the protocol. The research is clear that inconsistent or reduced performance can have many causes — pain, fear of reinjury, deconditioning — and should not be equated with malingering (Schwab et al., 2026). What an FCE puts on the file is what the worker demonstrated, documented and repeatable — not a verdict on character.

When should return-to-work planning start?

Early. Occupational-medicine guidance is blunt that prolonged absence is itself harmful and that the first days and weeks away from work matter most (ACOEM, 2006). The New York State Workers’ Compensation Board puts a number on where drift leads: only about half of injured workers return to work after a six-month absence, and fewer as the absence grows longer. The practical move is to ask the functional question — what can this worker do right now? — at every checkpoint in the claim, not just at the end.

Sources: AMA Guides to the Evaluation of Work Ability and Return to Work, 2nd ed. (Talmage, Melhorn & Hyman, 2011); Waddell & Burton, Is Work Good for Your Health and Well-Being? (2006); ACOEM, Preventing Needless Work Disability by Helping People Stay Employed (2006); New York State Workers' Compensation Board, employer return-to-work guidance; De Baets et al., J Occup Rehabil (2018); Gross & Battié, Spine (2004) and J Occup Rehabil (2005); Schwab et al., Frontiers in Rehabilitation Sciences (2026). Program medians are from our own billing records over the 24 months ending 2026-07-17 — how we count →.