"(1) This paragraph and paragraph 4 shall apply if there are normal working hours for an employee when employed under the contract of employment in force on the calculation date.
"(1) This paragraph shall apply if there are normal working hours for an employee when employed under the contract of employment in force on the calculation date, and he is required under that contract to work during those hours on days of the week or at times of the day which differ from week to week or over a longer period so that the remuneration payable for, or apportionable to, any week varies according to the incidence of the said days or times.
"(a)Section 81 of the Employment Protection (Consolidation) Act 1978 provides that where an employee who has been continuously employed for the requisite period is dismissed by his employer by reason of redundancy then, subject to the following provisions of the Act, the employer shall be liable to pay to him a sum (in the Act referred to as a redundancy payment) calculated in accordance with Schedules 4, 13 and 14. (b)Section 91 of the Act provides:-
"On making any redundancy payment, otherwise than in pursuance of a decision of a tribunal which specifies the amount of the payment to be made, the employer shall give to the employee a written statement indicating how the amount of the payment has been calculated."
"Where an employee who has been continuously employed for the requisite period - (a) is dismissed by his employer by reason of redundancy, or (b) is laid off or kept on short-time to the extent specified in subsection (1) of section 88 and complies with the requirements of that section,
"Any question arising under this Part as to the right of an employee to a redundancy payment, or as to the amount of a redundancy payment, shall be referred to and determined by an industrial tribunal.
"On making any redundancy payment, otherwise than in pursuance of a decision of a tribunal which specifies the amount of the payment to be made, the employer shall give to the employee a written statement indicating how the amount of the payment has been calculated."