Section 193 provides that if a person's civilian daily earnings or pre-CFTS pay varies during an example period (because of the operation of a law, or the making, alteration or operation of an award, etc, then the civilian daily earnings or pre-CFTS pay is adjusted as though the operation, alteration, etc, had occurred or had effect at the beginning of the example period.

If it is impracticable to work out a person's civilian daily earnings or pre-CFTS pay, then the civilian daily earnings or pre-CFTS pay of another person doing comparable work should be used.