The certificate of capacity, decoded for employers

The form that runs the whole claim

In the NSW workers compensation system, the certificate of capacity is the document everything else hangs off. It is how the treating doctor tells the insurer what the injury is, what the worker can safely do right now, and what treatment is planned. The insurer uses it to make decisions about weekly payments and treatment, and you use it to build suitable duties. The same form is used for CTP motor accident claims, so the reading skills transfer.

Most employers read it for one word: fit or unfit. The form is not really designed to answer that question. It is designed to answer a better one: what can this person safely do right now? Claims tend to run well when someone at the employer reads the middle of the form carefully and acts on it the same week, and they tend to drift when the certificate goes straight into a drawer.

Who writes it, and how often

The clinical sections are completed by the worker's nominated treating doctor: diagnosis, how the injury relates to work, current capacity, planned treatment and a review date. The worker completes and signs a declaration on the same form. In NSW the first certificate must come from a medical practitioner, but second and subsequent certificates can also be completed by the worker's treating physiotherapist or psychologist, which often makes sense once recovery is mostly about rebuilding function rather than settling the diagnosis.

A certificate generally covers up to 28 days. A doctor can certify a longer period, but only with special reasons stated on the certificate, so in practice you should expect a fresh certificate roughly every month while the claim is open. Diarise the end date. An expired certificate stalls everything: weekly payments rely on a current one, and nobody can safely match duties to a certificate that has run out.

When a certificate reaches you, send it to your insurer promptly. NSW employers are required to forward claim documents, including certificates, to their insurer within seven days of receiving them, and in practice the same day is better: the sooner the insurer has it, the sooner payments and approvals move.

The three capacity boxes, and why the middle one matters most

Every certificate ticks one of three boxes. Fit for pre injury duties means what it says: the worker can return to their normal role. No current capacity for any employment means the worker cannot safely do any work right now. And between them sits the box that runs most claims: has capacity for some type of employment, with hours per day, days per week and specific restrictions spelled out underneath.

The middle box is where returns to work are won and lost. It is not a polite version of unfit. It is a clinical statement that this person can work, within limits, and the research on recovery is remarkably consistent that working within those limits generally supports recovery better than resting at home does. The hours and restrictions on the certificate are your raw material: duties built inside them are safe, certified and genuinely useful.

No current capacity is a snapshot, not a sentence. It describes today, for the period certified, and it often changes at the next review, especially once the doctor learns that genuinely light duties exist. If that box is ticked, your job is warm contact and preparation, so that the moment capacity returns there is something real waiting.

Reading the detail like a case manager

Start with the dates: when the certificate starts, when it ends, and when review is due. Then read every restriction, not just the memorable one. A certificate that allows lifting to ten kilograms but also rules out overhead work and driving has three limits, and offered duties need to sit inside all of them. Duties that quietly exceed the certificate put the worker, the claim and the business at risk, however well intentioned they are.

Treat the certified hours as a starting structure, not a ceiling that never moves. Certificates should evolve as recovery progresses: hours stepping up, restrictions falling away, review by review. A certificate that repeats unchanged for months is not automatically wrong, but it is a prompt to ask respectful questions: is treatment progressing, has anyone told the doctor what duties are actually available, and would a conversation between the treating physiotherapist and the workplace move things along?

When a certificate does not seem workable

Sometimes a certificate lands and you cannot see how to use it: the restrictions rule out everything you have, or the certified capacity seems out of step with what the worker says they can do. The worst response is to ignore it, and the second worst is to pressure anyone to change it. A certificate is a clinical document, and leaning on a doctor or a worker to soften one damages trust and can put you on the wrong side of the scheme.

The productive response is better information. Doctors certify conservatively when they know little about the workplace, and most have never seen your site. A one page, honest description of the duties you can actually offer, sent through the worker or the case manager, often changes the next certificate more than any argument could. With the worker's consent you can also talk directly to the treating physiotherapist, who assesses function in concrete terms and can tell you what the restrictions mean in practice, and the insurer's case manager can arrange a workplace rehabilitation provider when the return needs more structure on the ground.

This is the part of the system where the treating physio earns their keep for employers. At PACT we treat injured workers in clinic at Miranda and by telehealth across NSW, we talk duties with employers with the worker's consent, and where appropriate we complete second and subsequent certificates of capacity ourselves, grounded in measured function rather than guesswork. For employers who want this handled systematically across a workforce, that is exactly what our occupational health services and the RADAR program are for.