SECTION 1. Coverage. — This Rule shall apply to all employees except:
(a) Those of the government and any of its political subdivisions, including government-owned and/or controlled corporations;
(b) Those of retail and service establishments regularly employing not more than five (5) workers;
(c) Domestic helpers and persons in the personal service of another;
(d) Managerial employees as defined in Book Three of this Code;
(e) Field personnel and other employees whose time and performance is unsupervised by the employer including those who are engaged on task or contract basis, purely commission basis, or those who are paid a fixed amount for performing work irrespective of the time consumed in the performance thereof.
SECTION 2. Night shift differential. — An employee shall be paid night shift differential of no less than ten per cent (10%) of his regular wage for each hour of work performed between ten o'clock in the evening and six o'clock in the morning.
SECTION 3. Additional compensation. — Where an employee is permitted or suffered to work on the period covered after his work schedule, he shall be entitled to his regular wage plus at least twenty-five per cent (25%) and an additional amount of no less than ten per cent (10%) of such overtime rate for each hour or work performed between 10 p.m. to 6 a.m.
SECTION 4. Additional compensation on scheduled rest day/special holiday. — An employee who is required or permitted to work on the period covered during rest days and/or special holidays not falling on regular holidays, shall be paid a compensation equivalent to his regular wage plus at least thirty (30%) per cent and an additional amount of not less than ten (10%) per cent of such premium pay rate for each hour of work performed.
SECTION 5. Additional compensation on regular holidays. — For work on the period covered during regular holidays, an employee shall be entitled to his regular wage during these days plus an additional compensation of no less than ten (10%) per cent of such premium rate for each hour of work performed.
SECTION 6. Relation to agreements. — Nothing in this Rule shall justify an employer in withdrawing or reducing any benefits, supplements or payments as provided in existing individual or collective agreements or employer practice or policy.