(1)Subject to the limits set by section 15, the amount of a guarantee payment payable to an employee in respect of any day shall be the sum produced by multiplying the number of normal working hours on that day by the guaranteed hourly rate, and, accordingly, no guarantee payment shall be payable to an employee in whose case there are no normal working hours on the day in question.
(2)Subject to subsection (3), the guaranteed hourly rate in relation to an employee shall be the amount of one week’s pay divided by—
(a)the number of normal working hours in a week for that employee when employed under the contract of employment in force on the day in respect of which the guarantee payment is payable; or
(b)where the number of such normal working hours differs from week to week or over a longer period, the average number of such hours calculated by dividing by twelve the total number of the employee’s normal working hours during the period of twelve weeks ending with the last complete week before the day in respect of which the guarantee payment is payable; or
(c)in a case falling within paragraph (b) but where the employee has not been employed for a sufficient period to enable the calculation to be made under that paragraph, a number which fairly represents the number of normal working hours in a week having regard to such of the following considerations as are appropriate in the circumstances, that is to say,—
(i)the average number of normal working hours in a week which the employee could expect in accordance with the terms of his contract;
(ii)the average number of such hours of other employees engaged in relevant comparable employment with the same employer.
(3)If in any case an employee’s contract has been varied, or a new contract has been entered into, in connection with a period of short-time working, subsection (2) shall have effect as if for the reference to the day in respect of which the guarantee payment is payable there was substituted a reference to the last day on which the original contract was in force.