At the time of his accident the appellant was working under the Pastoral Industry Award. The award recognizes several different classifications of workers other than station hands, including shearers/crutchers, shed hands, woolpressers and cooks. Clause 10 obliges both the employer and employee, before the commencement of work for which the employee has been engaged, to sign a written agreement. The schedule to the award sets out the form of Agreement appropriate to each classification of workers. Clause 10(e) provides that the minimum rates of remuneration to be paid by employers to employees shall be those prescribed in the award. Clause 14 prescribes the minimum rates for shearing. A base rate is struck per 100 flock sheep (wethers, ewes and lambs), by machine, with addition of varying percentages to cater for rams, stud ewes and their lambs, double-fleeced sheep, and hand shearing. In addition to this method of payment by piece work, the clause prescribes a figure "per day" under the heading "Engagement by the day". Clause 15 exhibits a similar remuneration structure for crutching. On the other hand, minimum rates per week are provided for shed hands, woolpressers, and cooks (cll. 16, 17 and 18). Clause 20 deals in Section A with the hours of work of shearers and crutchers. It is convenient to set out portion of the clause, as follows: