SECTION 1. Weekly Rest Day. — Every employer shall
give his employees a rest period of not less than twenty-four
consecutive hours for each period of seven days. The employer shall
determine and schedule the weekly rest day of his employees, subject to
collective bargaining agreement and to such rules and regulations as the
Secretary of Labor may prescribe: Provided, however, That the
preference of an employee as to his weekly rest day shall be respected
by the employer if the same is based on religious grounds.