An employer must not permit an employee who has been certified by a designated medical practitioner as
medically unfit, to perform or supervise commercial diving operations: Provided that the employee may return to
perform that work after being certified medically fit by a designated medical practitioner, and after-
(a) being informed of the results of the exposure assessment; and
(b) being prescribed medical tests in the frequency that they should be repeated, based on the risks.
