Overtime: Increase and legal calculation

Introduction

Overtime is one of the most sensitive topics in French employment law. Between calculating the annual contingent, applicable uplift rates and recent tax and social exemptions, both employers and employees sometimes struggle to navigate. A calculation error can expose the company to URSSAF corrections, or even costly employment tribunal disputes. This article reviews the legal framework in force in 2026, the calculation methods to apply and the best practices to adopt in order to secure the management of overtime in your organisation.

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Definition and general framework for overtime

What is an hour of overtime?

An hour of overtime is any hour of actual work performed beyond the legal weekly duration of 35 hours (article L. 3121-28 of the French Labour Code). It is distinct from complementary hours, reserved for part-time employees, and on-call duties, which are governed by a different regime.

Counting is carried out on a calendar week basis (Monday 00:00 to Sunday 24:00), unless a collective agreement provides for another reference framework, in particular in the event of annualisation of working time.

The annual overtime contingent

The annual contingent represents the maximum volume of overtime hours an employer can impose on an employee without authorisation from the labour inspectorate. Since the law of 20 August 2008, this contingent is set by company or sector collective agreement. In the absence of an agreement, it is set at 220 hours per year (Decree No. 2004-1381).

Beyond the contingent, the employer must:

• Obtain the opinion of the social and economic committee (CSE);

• Provide a compulsory compensation in rest (COR), the rate of which is 50% for companies with 20 employees or fewer, and 100% above that.

Maximum durations not to be exceeded

Even in the presence of overtime, absolute maximum durations apply:

• 10 hours of actual work per day (except in cases of exemption);

• 48 hours per week (absolute maximum);

• 44 hours on average over a period of 12 consecutive weeks.

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Calculation of the overtime increase

Legal uplift rates

In the absence of a collective agreement, the French Labour Code (article L. 3121-36) sets the following uplift rates:

• 25% for the first 8 hours of overtime per week (from the 36th to the 43rd hour);

• 50% from the 44th hour per week.

A company or sector agreement may lower these rates, with a minimum of 10%, or conversely raise them. It is therefore imperative to check the applicable collective agreement before any calculation.

Practical calculation method

The basic hourly rate (THB) serves as the starting point. It is obtained by dividing the gross monthly remuneration by the number of monthly reference hours (151.67 hours for a full-time 35-hour/week contract).

Example of calculation:

• Gross monthly salary: €2,500

• THB = 2,500 / 151.67 = €16.48 / hour

• Overtime hour at 25%: 16.48 × 1.25 = €20.60

• Overtime hour at 50%: 16.48 × 1.50 = €24.72

This calculation applies to all elements of remuneration of a general and permanent nature (basic salary, seniority bonuses, etc.), excluding reimbursement of professional expenses.

Replacement of payment with a replacement compensation rest

Article L. 3121-33 of the French Labour Code permits replacement of the increased payment with a replacement compensation rest (RCR), provided that a collective agreement provides for it, or failing that, with the employee's consent. The RCR must be equivalent in value: one hour of overtime at 25% uplift gives entitlement to 1 hour 15 minutes of rest.

This option is particularly valued in companies wishing to limit the payroll whilst retaining their employees through additional free time. Electronic signature for HR facilitates the formalisation of these individual and collective agreements, guaranteeing complete traceability of consents.

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Tax and social exemptions in 2026

The "Work, employment, purchasing power" (TEPA) scheme

Arising from the TEPA law of 21 August 2007, renewed and strengthened by the law of 16 August 2022 (article 2), the exemption scheme continues to apply in 2026:

• Exemption from income tax: remuneration paid for overtime hours is exempt within an annual limit of €7,500 gross (limit applicable since 1 January 2019);

• Reduction of employee contributions: reduction rate set at 11.31% (standard rate, which may vary according to the fund);

• Flat-rate deduction of employer contributions: applicable only to companies with fewer than 20 employees, at €1.50 per hour of overtime.

These advantages constitute a powerful lever for encouraging overtime without unduly increasing costs for the employer or tax burden for the employee.

Conditions of application and vigilance

The exemption does not apply to:

• Fictitious overtime hours (absence of actual work);

• Hours worked under a part-time contract (complementary hours scheme);

• Where the collective working duration has been reduced to benefit from the scheme (anti-abuse clause).

URSSAF regularly checks the consistency between DSN declarations and working time records. A rigorous time tracking system, coupled with electronic signature tools in the company to validate hour records, considerably reduces the risk of correction.

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Documentary obligations and working time monitoring

The hours register and the DSN

The employer is required to maintain a precise record of actual working hours for each employee (article L. 3171-4 of the French Labour Code). This record may take the form of:

• An electronic badging system;

• Weekly time records signed by the employee;

• Time management software.

Overtime hours must be declared in the DSN (Nominative Social Declaration) with appropriate remuneration nature codes. An encoding error may result in rejection of the exemption by URSSAF.

Formalisation of agreements and amendments

Any change to working duration, any agreement on replacement of payment with rest or on exceeding the contingent must be formalised in writing. Tools complying with the eIDAS Regulation permit to secure these documents legally, to guarantee their integrity and to prove the informed consent of both parties.

To go further in HR dematerialisation, the complete guide to electronic signature sets out the signature levels suited to each type of document.

Time management in modulation and annualisation agreements

In companies that have implemented annualisation of working time (article L. 3121-41 et seq.), overtime is no longer counted on a weekly basis but at the end of the reference period (generally the calendar year). Hours exceeding 1,607 annual hours (legal annual duration) are then classified as overtime and give rise to corresponding uplifts and exemptions.

This complex organisation requires reliable reporting tools. Integrated SaaS HR management solutions, such as those compatible with electronic signature solutions for HR, allow these calculations to be automated and human error risks to be reduced.

Legal framework applicable to overtime

The regulation of overtime in France is based on a dense body of legislation and regulations, articulating national employment law and community principles.

French Labour Code:

• Article L. 3121-28: defines overtime as any hour worked beyond 35 hours per week;

• Article L. 3121-33: regulates the replacement of payment with a replacement compensation rest;

• Article L. 3121-36: sets the legal uplift rates (25% and 50%) in the absence of a collective agreement;

• Article L. 3121-41 et seq.: governs the methods of annualisation of working time;

• Article L. 3171-4: requires maintenance of a record of actual working hours.

Regulatory texts:

• Decree No. 2004-1381 of 20 December 2004: sets at 220 hours the supplementary contingent;

• Decree No. 2021-1246: clarifies the methods of reducing employee contributions on overtime hours.

Founding laws:

• Law No. 2007-1223 of 21 August 2007 (TEPA law): establishes income tax exemption and contribution reduction;

• Law No. 2008-789 of 20 August 2008: reforms the contingent and opens the way to collective agreements on working time arrangements;

• Law No. 2022-1158 of 16 August 2022 (purchasing power law): maintains and adapts TEPA exemptions for 2022-2026.

European Directive:

• Directive 2003/88/EC of the European Parliament and of the Council, of 4 November 2003, concerning certain aspects of the organisation of working time: imposes maximum durations (48 hours/week on average), daily rest of 11 consecutive hours and weekly rest of 35 hours, to which overtime must comply.

Legal risks for the employer: Failure to pay or correctly increase overtime exposes the employer to an action for recovery of wages before the Employment Tribunal (prescription period of 3 years), as well as an URSSAF correction which may include late payment increases (between 5% and 10%) and penalties. In the event of undeclared work (article L. 8221-5 of the French Labour Code), criminal sanctions may reach 3 years' imprisonment and €45,000 fine. Formalisation in writing and traceability of all agreements relating to working time therefore constitutes an elementary duty of care.

Usage scenarios: managing overtime in the company

Scenario 1 — An industrial SME with seasonal activity peaks

An SME in the manufacturing sector employing approximately 80 employees faces recurring production peaks from September to November. Without a modulation agreement, overtime accumulates rapidly beyond the legal contingent of 220 hours for several operators. By implementing an annualisation agreement signed electronically by representatives of the workforce and validated by all concerned employees via a dematerialised signature platform, the company reduces the number of weeks exceeding 43 hours. Result: the cost of the 50% uplifts decreases by around 30% over the fiscal year, and the administrative formalities linked to CSE consultation are tracked and archived in less than 48 hours instead of 5 working days.

Scenario 2 — An accounting firm in the tax season

A firm comprising around fifteen employees sees its teams carry out between 15 and 20 hours of overtime per week from January to May. Management decides to opt for replacement of payment with a replacement compensation rest (RCR) to limit the impact on cash flow. Each individual RCR agreement is submitted to the employee via a SaaS electronic signature platform, which automatically generates pre-filled documents and retains proof of consent. Administrative processing time falls from 3 days to less than 2 hours per monthly cycle, and the firm eliminates any risk of later contestation of the employee's agreement.

Scenario 3 — A multi-site retail group subject to URSSAF inspection

A retail chain with some thirty outlets and approximately 400 employees is subject to URSSAF inspection concerning the application of TEPA exemptions. The inspector requests justification of overtime hours declared in the DSN for the past 36 months. Thanks to a system of weekly time records signed electronically by each site manager and archived in the digital safe of the platform, the company provides all evidence within 24 hours. No correction is made. By way of comparison, a similar company without a digital traceability system suffered, in an analogous case published by URSSAF in its annual report, an average correction of €45,000 accompanied by late payment increases.

Conclusion

Managing overtime in France requires precise mastery of calculation rules, applicable uplift rates and exemption schemes in force. Between the contingent of 220 hours, the 25% and 50% uplift thresholds and the €7,500 tax exemption limit, each parameter counts. Added to this is a rigorous documentary obligation: any agreement, amendment or time record must be formalised, signed and kept in a probative manner.

Certyneo helps you secure this administrative management through electronic signature solutions compliant with eIDAS, designed for HR teams and senior management. Automate the signature of your modulation agreements, your flat-rate agreements and your overtime records. Discover our rates and get started free on certyneo.com.