Overtime in the Shift Plan: Regulations, Maximum Limits, and Action Steps

How many overtime hours are legally permissible? For a full-time employee with a regular 40-hour week, a mathematical maximum of 20 overtime hours per week is allowed. This upper limit for overtime and additional work results directly from the German Working Hours Act (§ 3 ArbZG), which bindingly regulates permissible working hours per day and week. Adherence to these specifications is mandatory for HR departments to avoid legal consequences and maintain compliance.

Statutory Regulations at a Glance

• Maximum Working Hours: Fundamentally, employees may work a maximum of 48 hours per week, including all overtime. Daily working hours must not exceed 8 hours.
• Temporary Exceptions: Working hours may be temporarily extended to up to 60 hours per week and 10 hours per day. This additional work is only permissible if the average daily working time drops back to a maximum of 8 hours per working day within a balancing period of six months (or 24 weeks). Compensatory time off is mandatory.
• Unforeseen Emergencies: In acute emergencies (such as natural disasters or massive operational disruptions), employers may obligate staff to perform additional work. A personnel bottleneck caused by poor planning does not justify this exception.
• Executive Employees: Managers with significant personnel responsibility who independently decide on hiring and firing or possess general powers of attorney (§ 5 Abs. 3 BetrVG) are exempt from the strict specifications of the Working Hours Act.
• Collective Bargaining Agreements: Deviating and specific overtime regulations can be anchored in collective bargaining agreements or works agreements.

Limits on Working Time Accounts

‍The Working Hours Act does not define a flat-rate upper limit for working time accounts. The limitation arises indirectly from the maximum daily working hours. Since the daily working time must not exceed an average of eight hours over a six-month period, an unlimited accumulation of overtime is legally impossible. Works agreements typically define exact capping limits here.

Regulations for Part-Time Employees

‍For part-time employees, regular overtime contradicts the contractual purpose of their employment. Permanent additional work among part-time staff can legally lead to a claim for contract adjustment. Exceptions apply in real operational emergencies or if employment or collective agreements contain corresponding clauses. Avoiding overtime for part-time workers is a key factor in maintaining employee satisfaction.

Forfeiture of Earned Overtime

‍Overtime can expire. The exact timing depends on employment contract or collective bargaining provisions, known as exclusionary periods (Ausschlussfristen).

• Minimum Deadlines: Contractual exclusionary periods must be at least three months. Shorter contractual provisions are legally ineffective.
• Statutory Limitation: If a contractual regulation is missing, the statutory limitation period of three years applies. This period begins at the end of the calendar year in which the hours were worked.
• Illness During Compensatory Time Off: If an employee falls ill during scheduled compensatory time off, the utilized overtime hours are generally forfeited. Unlike recreational leave, these hours are not credited back to the employee unless deviating collective or contractual agreements exist.

Reducing Overtime: Payout or Compensatory Time Off?

‍If overtime is ordered or tolerated, a duty of remuneration exists. If a specific clause regarding premiums is missing from the contract, Section 612 of the German Civil Code (BGB) applies: The employer must financially compensate the hours if remuneration can be expected under the circumstances.In industrial shift planning, compensatory time off is the preferred method. This protects budgets and reduces personnel costs for plant management.The following rules apply:

• Managerial Prerogative: Employees cannot reduce overtime autonomously. The employer determines the timing of compensatory time off while considering operational workflows.
• Termination Scenarios: Upon termination of employment, the entitlement to compensate open hours remains—either through time off during the notice period or through financial compensation.
• Taxation: The payout of overtime is treated as regular wages and is subject to full tax and social security contributions.

Notice Periods for Scheduled Overtime

‍Short-term personnel absences or an approaching project deadline often lead to spontaneously ordered overtime. Without emergency clauses in the employment contract, this practice is legally inadmissible.Case law (including the Frankfurt/Oder Labor Court, Case Ref.: 7 Ca 3154/04) demands a notice period of at least four days in advance. Courts prioritize the predictability of free time for employees over short-term operational interests.

Are Permanent Overtime Hours Permissible?

‍Continuous overtime endangers the health of the workforce and compromises operational safety. The Occupational Safety and Working Hours Act serves to prevent such overburdens. Although the six-month balancing period allows for up to 20 overtime hours per week in phases, a permanent state without corresponding compensation is inadmissible and represents a significant legal risk.

Intelligent Workforce Scheduling: Systematically Avoiding Overtime

‍High overtime accounts cause costs, increase legal risks, and lower employee satisfaction. For plant and HR managers, avoiding uncontrolled additional work is a strategic necessity. In industrial environments with complex shift models, manual planning is insufficient to react to production peaks or personnel absences in a timely manner.A professional workforce planning tool solves this problem through process automation and scheduling optimization:

• Automated Shift Staffing: The system reconciles personnel requirements with available capacities in real-time. Potential overtime is recognized and avoided during the planning phase. The workload is distributed evenly and in compliance with the law.
• Qualification Management (shyftskills): Assignments are made not only by availability but by qualification. This prevents individual specialists from being systematically overworked while securing quality and efficiency in the production process.
• Mobile Application and Open Shifts: In the event of short-term personnel demands, the mobile application enables transparent and direct communication. Employees can proactively take over open shifts (Bringschichten), which strengthens self-responsibility and massively reduces planning time.
• Seamless System Integration: Crucial for IT management is secure connectivity to existing systems. Deep integration (for example, via SAP) ensures that recorded times are transferred to payroll error-free and in a tamper-proof manner. This minimizes administrative effort and guarantees maximum data security.If additional work cannot be avoided, system support ensures that notice periods and legal requirements are strictly observed. This protects the company from legal conflicts and retains employees through transparent and reliable processes.