"(1) Where an employee is entitled to overtime pay when employed for more than a fixed number of hours in a week or other period, there are for the purposes of this Act normal working hours in his case. (2) Subject to subsection (3), the normal working hours in such a case are the fixed number of hours."
"7 NORMAL HOURS OF WORK 7.1 Owing to the nature of the security industry, all employees will be expected to work various hours and shifts including days, nights, weekends and Public Holidays."
"7.3 All employees will be expected to work reasonable additional hours when requested to do so by the Management. 7.4 The standard shift pattern is forty eight hours over a six day period. However, owing to exigencies and peculiarities of individual assignments, the standard shift pattern may be more or less than forty eight hours."