Legal basis: labor law
Article 44 Under any of the following circumstances, the employing unit shall pay wages higher than the wages of the workers during their normal working hours according to the following standards:
(1) If the laborer is arranged to work longer hours, he shall be paid no less than 150% of the salary;
(2) If workers are arranged to work on rest days but cannot be arranged for compensatory time off, they shall be paid a salary of not less than 200% of their wages;
(3) If workers are arranged to work on legal holidays, they shall be paid no less than 300% of their wages.
Labor Contract Law
Article 31 The employing unit shall strictly implement the labor quota standards, and shall not force laborers to work overtime or in disguised form. Where the employing unit arranges overtime work, it shall pay overtime wages to the workers in accordance with the relevant provisions of the state.