How to Calculate Payroll for a Day Count Employee Hired Mid-Year?
Why Does Hiring a Day Count Employee Mid-Year Pose Payroll Calculation Difficulties?
The annual day count system, governed by Articles L.3121-58 and following of the French Labour Code, constitutes a framework for organizing working hours reserved for autonomous executives and certain employees whose working hours cannot be predetermined. When a day count employee is hired during the calendar year or the reference period, two distinct calculations must be carried out by the payroll department:
- Prorating the salary for the first incomplete month of work;
- Prorating the number of days to be worked for the remaining portion of the year.
These two operations are subject to strict rules, often poorly understood, and ignorance of which exposes the employer to salary claims and litigation before the labor tribunal (conseil de prud’hommes). This article details the mandatory methodology, supported by formulas, including a complete numerical example. For an overview of payroll mechanisms, see our comprehensive payroll guide.
What is the Mandatory Method to Prorate the Salary of the First Month for a Day Count Employee?
Contrary to what some payroll software may default to, the prorating of the salary for the first month of a day count employee is performed exclusively based on calendar days. It is strictly forbidden to use prorating based on working days, business days, the thirtieth rule, or the thirty-first rule.
The applicable formula is as follows:
Salary for the month = Monthly remuneration − (Monthly remuneration ÷ Number of calendar days in the month × Number of calendar days not worked before hiring)
This formula derives from the combined application of Articles L.3242-1 (monthly payment of salary) and L.3121-58 and following of the French Labour Code. The use of calendar days is justified by the fact that the day count system deviates from hourly accounting of working time: referencing calendar days is the only neutral method that conforms to the very nature of the day count system.
Why Are Other Prorating Methods Forbidden?
The thirtieth (or thirty-first) rule is a mechanism derived from jurisprudence applicable to employees whose working time is counted in hours. Applying it to a day count employee would create an artificial distortion, sometimes favorable and sometimes unfavorable to the employee, depending on the actual number of calendar days in the hiring month. Similarly, prorating based on working or business days is unsuitable for the day count system, which relies on counting working days and rest days over the year, rather than a weekly logic of five or six days.
The Court of Cassation has repeatedly emphasized that day count agreements must be interpreted strictly and that any calculation method not provided for by the applicable collective agreement or by law is likely to be challenged (Cass. soc., June 29, 2011, n° 09-71.107). Therefore, it is essential to adhere to the calendar day method, the only one compliant with the texts.
How to Calculate the Number of Days to Be Worked for the Remaining Period After Hiring Mid-Year?
The second calculation concerns determining the number of days that the employee must actually work between their hiring date and the end of the reference period (usually December 31 for a calendar-year fiscal period). This operation follows a mandatory five-step method (a → e) that we detail below.
Step (a): Determine the Remaining Calendar Days for the Reference Period
This involves counting the total number of calendar days from the hiring date (inclusive) to the last day of the reference period (inclusive). For example, for a hire date of April 15 with a fiscal period based on the calendar year, count from April 15 to December 31, equaling 261 calendar days.
Step (b): Deduct Weekly Rest Days
Next, deduct all Saturdays and Sundays (or weekly rest days as stipulated by the collective agreement) within this period. Article L.3132-1 of the French Labour Code guarantees a weekly rest period of at least 24 consecutive hours, along with 11 hours of daily rest, totaling 35 consecutive hours. For our example from April 15 to December 31, typically identify 74 weekly rest days (Saturdays and Sundays).
Step (c): Deduct Public Holidays Coinciding With Normally Worked Days
Only public holidays that fall on a usually worked day (generally Monday to Friday) should be deducted. Public holidays falling on a Saturday or Sunday do not need to be deducted as they are already accounted for in Step (b). Articles L.3133-1 and L.3133-7 to L.3133-12 of the French Labour Code establish the list of legal public holidays. For the period from April 15 to December 31, 2026, for example, identify 6 public holidays falling on weekdays (May 1, May 8, July 14, Ascension Thursday, August 15, November 1, December 25 depending on the year — the exact count depends on the calendar for the year considered).
Step (d): Deduct Prorated Paid Leave Rights
An employee hired mid-year acquires prorated paid leave rights per Article L.3141-1 of the French Labour Code. These rights must be estimated and deducted from the number of days to be worked. For an employee hired on April 15, the rights accrued for the remaining reference period are calculated on a prorated basis. If the employee has not accrued any paid leave rights (first year of hiring without carry over), this step may result in zero, but it must still be formalized in the calculation.
Step (e): Deduct Prorated Rest Days from the Day Count
The rest days associated with the day count (often referred to as