A period of vacation leave given to an employee shall not include any period—
(a) of sick leave to which he or she is entitled under the terms of his or her contract of employment or otherwise;
(b) of maternity leave to which a female employee is entitled under the terms of her contract of employment or otherwise;
(c) of disability caused by accident or disease for which compensation is payable under the provisions of this Act or any law in force;
(d) for which an employee is called to serve on jury duty or national service or public duty;
(e) of off days specific to the employee; or
(f) of public holidays.