means the amount of money payable to an employee in terms of clause 3(1) in respect of the ordinary hours of work as prescribed in clause 5(1): Provided that-
a) if an employer regularly pays an employee in respect of such ordinary hours of work an amount higher than that prescribed in clause 3(1), it means such higher amount;
b) the first proviso shall not be so construed as to refer to or include any remuneration which an employee, who is employed on a piece work basis, receives over and above the amount which the employee would have received had he or she not been employed on such a basis.