Where throughout a day during any part of which an employee would normally be required to work in accordance with his contract of employment the employee is not provided with work by his employer by reason of—
a diminution in the requirements of the employer's business for work of the kind which the employee is employed to do, or
any other occurrence affecting the normal working of the employer's business in relation to work of the kind which the employee is employed to do,
the employee is entitled to be paid by his employer an amount in respect of that day.
In this Act a payment to which an employee is entitled under subsection (1) is referred to as a guarantee payment.
In this Part—
a day falling within subsection (1) is referred to as a "workless day", and
"workless period" has a corresponding meaning.
In this Part "day" means the period of twenty-four hours from midnight to midnight.
Where a period of employment begun on any day extends, or would normally extend, over midnight into the following day—
if the employment before midnight is, or would normally be, of longer duration than that after midnight, the period of employment shall be treated as falling wholly on the first day, and
in any other case, the period of employment shall be treated as falling wholly on the second day.