Overtime pay is one of the most frequently disputed issues in China employment law. The legal framework governing overtime compensation is primarily established by the Labor Law of the People's Republic of China (1994, amended 2018) and the Labor Contract Law (2008, amended 2012), supplemented by implementing regulations and judicial interpretations. Understanding the precise rules for calculating overtime pay is essential for both employers seeking compliance and employees protecting their statutory rights. This article provides a comprehensive overview of China's overtime salary system, including applicable rates, legal limits, and common pitfalls in enforcement.

Under Article 44 of the PRC Labor Law, overtime work must be compensated at premium rates above the employee's standard wage. The calculation methodology is straightforward but strictly enforced: overtime on a regular workday (extending beyond the standard eight-hour day) must be paid at no less than 150% of the employee's hourly wage. If an employee is required to work on a rest day (typically Saturday or Sunday), the rate increases to 200% of the hourly wage unless the employer provides compensatory time off in lieu of payment. For work performed on statutory public holidays — of which there are eleven in China under the State Council regulations — the rate rises to 300% of the hourly wage, and compensatory time off is not an acceptable substitute for monetary payment. These rates are mandatory minimums; employers may offer more generous terms through collective contracts or individual employment agreements, but may not contract around the statutory floor.

Calculating the base hourly wage requires careful attention to the composition of an employee's compensation. Under the Ministry of Human Resources and Social Security's regulatory guidance, the monthly counting days for overtime calculation purposes is 21.75 days per month — this figure represents the average number of working days after deducting weekends from the calendar year. To derive the daily wage, divide the employee's monthly base salary by 21.75. To derive the hourly wage, divide the daily wage by the standard working hours (typically 8). Critically, the base salary used for overtime calculation includes only the employee's basic wage and position-related allowances, not discretionary bonuses, performance-based variable pay, or one-time subsidies — though this distinction has been the subject of significant litigation and varies somewhat by locality. The Beijing Higher People's Court and the Shanghai First Intermediate People's Court have issued differing interpretive guidelines on this point, underscoring the importance of local legal advice.

China's labor laws also impose strict limits on the total amount of overtime an employer may require. Article 41 of the Labor Law provides that employers may extend working hours only after consultation with the trade union or employee representatives, and the extended hours shall generally not exceed one hour per day. Where special circumstances require further extension, the daily overtime shall not exceed three hours, and the total monthly overtime shall not exceed thirty-six hours. While enterprises may apply for special permission from local labor administrative authorities to exceed these limits in certain industries, unauthorized overtime beyond the statutory caps exposes employers to administrative penalties under the Labor Inspection Regulations, including warnings, orders for correction, and fines ranging from RMB 1,000 to RMB 20,000 per violated employee. More significantly, employees have the right to refuse excessive overtime without retaliation under Article 32 of the Labor Contract Law. In practice, many Chinese employers require employees to sign overtime waiver agreements or submit 'voluntary' overtime applications to circumvent these limits. However, the Shanghai Higher People's Court has issued guidance clarifying that such waivers do not relieve employers of their statutory obligations, and employees who were in fact directed or expected to work beyond legal limits remain entitled to overtime compensation regardless of any signed documentation to the contrary.

A particularly contentious area in Chinese overtime law involves the 'comprehensive working hours' system applicable to certain industries. Under Ministry of Human Resources and Social Security regulations, employers in transportation, hospitality, telecommunications, and other sectors with inherently irregular work schedules may apply for approval to use a comprehensive working hours calculation system, where overtime is calculated over a longer period — typically a month, quarter, or year — rather than on a daily basis. However, even under this system, the total working hours averaged over the calculation period cannot exceed the legal standard, and work performed on statutory holidays must still be compensated at 300% of the standard wage. Employers who claim to operate under this system without having obtained prior administrative approval from the local labor bureau face significant legal exposure in overtime disputes.

Enforcement of overtime rights in China has strengthened considerably in recent years. Employees can bring claims before the Labor Dispute Arbitration Commissions, and the burden of proof regarding working hours has been partially shifted to employers in certain jurisdictions. The Supreme People's Court's Interpretation (I) of the Labor Contract Law, effective January 2021, clarified that where an employer possesses attendance records but fails to produce them during arbitration or litigation, the arbitral tribunal or court may adopt the employee's assertions regarding working hours. This evidentiary rule has significantly increased the importance of proper time-keeping systems. Employers should implement standardized electronic attendance systems, maintain overtime approval procedures in writing, and retain all payroll and attendance records for at least two years as mandated by Article 11 of the Labor Contract Law Implementing Regulations. Employees who believe their overtime rights have been violated should meticulously preserve evidence including work schedules, email timestamps, and attendance records, and should consult with qualified PRC employment counsel to assess the merits of a claim before the one-year statute of limitations applicable to labor dispute arbitration expires.