The fiftieth employee costs more than the forty-ninth

Constructed figure, assumptions listed

Business is good. The order book is full, two hires are underway, and headcount will go from 48 to 51 people in the spring.

No one asks what these three hires cost beyond their salary. Yet it’s the third one that changes the social regime of the entire company.

What crossing the threshold adds

To this is added mandatory profit-sharing, whose amount depends on profit, equity and value added. It is the heaviest line and the only one no one can cost in advance.

On a payroll of €1.5 million, the recurring total is €15,750. On €4 million, it’s €42,000.

The trap isn’t the amount, it’s the timing

Since 2019, an upward crossing is only taken into account after five consecutive calendar years above the threshold. Headcount is calculated by Urssaf from your social security declarations, averaged over the previous calendar year, and fixed on 1 January.

A company that crosses 50 employees on 1 January 2026 and stays there becomes liable in 2031.

Two consequences most executives discover too late.

The first. Five fiscal years separate the decision from its cost. The person who approved the 2026 hires may no longer be there in 2031, and the 2031 budget will be built by someone who never made the connection.

The second. Crossing downward ends the obligations and reopens a full five-year period. A company that oscillates around 50 never pays, which creates an incentive worth naming plainly: managing headcount to stay under a threshold is a strategy that caps the company to save 1.05 % of its payroll. The math is bad as soon as growth is worth more than 1.05 %.

What gets no grace period at all

The five-year smoothing covers contributions and profit-sharing. It does not cover organisational obligations, which apply as soon as the threshold is reached over twelve consecutive months.

An economic and social committee with expanded powers, recurring consultations and the right to expert review. An economic, social and environmental database, to be built and kept current. Internal rules. A dining facility. Annual publication of the gender equality index. Possible designation of union representatives, and with it, entry into company-level collective bargaining.

None of these lines is a contribution. All of them consume management time, and that time appears in no budget.

What you will be told, and what to answer

“We’ll deal with it when the time comes.” The time comes five years after the decision, and the obligation will apply to a payroll that will have grown in the meantime. The amount to provision isn’t today’s.

“That’s an HR matter.” Three quarters of the cost is contributions, a finance matter. The economic and social committee and collective bargaining are a top-management matter. The five-year timeline is a steering matter. HR executes, it doesn’t decide alone.

“We’ll stay at 49 for now.” That’s a legitimate decision provided it’s made and written down as such, with its opportunity cost stated. A company that refuses 10 % growth to avoid 1.05 % in charges is doing bad math. A company that doesn’t know it’s doing this isn’t doing any math at all.

“Our accountant will warn us.” They’ll warn you the year you become liable. The useful decision is made five years before.

To check for yourself, in twenty minutes

Your headcount in the social security sense. It isn’t the number of contracts nor the number of people present today, but the average of monthly headcounts over the previous calendar year, calculated by Urssaf from your declarations. Ask for it, don’t estimate it.

The start year of your counter. If you’ve been above 50 since 2024, the deadline is 2029. Put it in the five-year plan, not in a memo.

The amount to provision. 1.05 % of your projected payroll at the deadline, plus a profit-sharing estimate made with your accountant based on your last three fiscal years.

The cost of the fiftieth hire. An executive at €55,000 gross costs €78,546. The crossing it triggers costs €26,250 a year starting the sixth year. These are two distinct lines, and only one appears in the hiring request.

The sentence to remember

The 50-employee threshold isn’t crossed the day of the hire. It’s paid five years later, by a team that never made the decision.

Open in a spreadsheet · The cost of crossing, as a spreadsheet (1,235 bytes)

Sources

• Company headcount: social obligations by threshold · Service-Public Entreprendre, DILA, 1 January 2026

  Licence: NON VÉRIFIÉ · Headcount calculated by Urssaf from social security declarations, determined on 1 January. The effects of crossing upward only apply after five consecutive calendar years above the threshold. Crossing downward ends the obligations and reopens a full five-year period. Last update date of the notice to confirm.

• Employer contribution to the construction effort · Service-Public Entreprendre, DILA, 1 January 2026

  Licence: NON VÉRIFIÉ · Minimum contribution of 0.45 % of compensation paid the previous year. Threshold crossed on 1 January 2023 then observed for five consecutive years: liable from 2028.

• Table of social contribution bases and rates on salaries, 1 January 2026 · CAPEB, 19 January 2026

  Licence: NON VÉRIFIÉ · Housing assistance fund: 0.10 % on the portion capped at the social security ceiling for companies under 50 employees, 0.50 % on the full salary from 50 employees. Construction effort contribution 0.45 % from 50 employees.