“(2) Where—

(a) for any week an employee's remuneration is less than one-half of his normal weekly remuneration or his hours of work are reduced to less than one-half of his normal weekly hours,

(b) the reduction in remuneration or hours of work is caused by a diminution either in the work provided for the employee by his employer or in other work of a kind which under his contract the employee is employed to do.

(c) it is reasonable in the circumstances for the employer to believe that the diminution in work will not be permanent and he gives notice to that effect to the employee prior to the reduction in remuneration or hours of work,

the employee shall, for the purposes of this Part, be taken to be kept on short-time for that week.”.