(1) Where an employee's employment ceases by reason of his employer's being unable to provide the work for which the employee was employed to do, and -
(a) it is reasonable in the circumstances for that employer to believe that the cessation of employment will not be permanent, and
(b) the employer gives notice to that effect to the employee prior to the cessation,
that cessation of employment shall be regarded for the purposes of this Act as lay-off.
(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
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