AT825520 - Australian Workers’ Union Construction and Maintenance (Western Australia) Award 2003 [Transitional]
15.1 Where an employee is required to do, and does on any one day for a time exceeding two hours in the aggregate, work for which a higher rate is prescribed than for other work done by him/her on that day, he/she shall be paid at not less than such higher rate for all work done by him/her on that day.
15.2 In all other cases where an employee does more than one class of work he/she shall be paid for each class proportionately to the time he/she works thereat.