4.—(1) This paragraph applies where—N.I.
(a)under the contract of employment under which a betting worker who satisfies paragraph 2(2)(a) was employed on the day before the commencement date, the employer is, or may be, required to provide him with betting work for a specified number of hours each week;
(b)under the contract the betting worker was, or might have been, required to work on Sunday before the commencement date; and
(c)the betting worker has done betting work on Sunday in that employment (whether or not before the commencement date) but has, on or after that date ceased to do so.
(2) So long as the betting worker remains a protected betting worker, the contract shall not be regarded as requiring the employer to provide him with betting work on weekdays in excess of the hours normally worked by the betting worker on weekdays before he ceased to do betting work on Sunday.
(3) For the purposes of paragraph 2(2)(b), the appropriate date in relation to this paragraph is any time in relation to which the contract is to be enforced.]