(1)  A medical practitioner may not issue a medical certificate under this Act certifying that a worker is totally incapacitated for work for a period of more than 28 days, unless the certificate specifies –

(a) the medical practitioner's reasons why the period is longer than 28 days; and

(b) a date on which the medical practitioner will review whether the worker remains totally incapacitated for work.

(2)  If a medical practitioner is of the opinion that a worker is unlikely, for a period (whether limited or indefinite), to be able to resume –

(a) work for the number of hours in a week for which the worker was generally engaged by the employer before the worker suffered the workplace injury; or

(b) some or all of the duties for which the worker was generally engaged by the employer before the worker suffered the workplace injury –

the medical practitioner must, in a medical certificate issued under this Act, specify the opinion, the reasons for it, and the period.

(3)  A failure to comply with subsection (1) or (2) in relation to a medical certificate does not affect the validity of a claim to which the certificate relates.