The Probation Period Is Not a Safety Net. Treating It Like One Is Where It Goes Wrong.

Why the Trial Period Feels Like a Safety Net

Picture the first hire at a company of five or ten people. There is no scorecard, no second interviewer, no reference framework to lean on, so the interview is a conversation and the decision is, honestly, a feeling. In that setup the trial period becomes the real test by default. It is the first stretch of time where you are not guessing from a CV and a chat, but watching someone actually do the work.

It also feels low-risk on paper. During the trial you can end the contract without the procedure a later dismissal would require, so “hire and see” looks cheaper and safer than “evaluate hard up front.” The catch is that “you can end it easily” is a statement about paperwork, not about cost. The formalities are light. Almost everything else about a hire that does not work out is not.

What the Probation Period Actually Is

Start with what the law actually sets up, because it is more bounded than the “try before you buy” framing suggests. For a permanent contract, the maximum initial probation period is fixed by the employee’s category, and it can be renewed once only where a collective agreement provides for it. Those ceilings, from the official rules on the probation period, look like this:

Two things follow from that table. First, the window is not open-ended: you have weeks, not an indefinite trial, to reach a decision. Second, ending it is not instant once someone has been there a while. A notice period, the délai de prévenance, applies and grows with tenure, from 24 hours in the first days up to a month once someone has passed three months. The probation period must also be written into the contract to exist at all.

There is a quieter point too. The trial runs in both directions: the candidate is judging you just as much as you are judging them. A strong first hire who senses they are a bet you are hedging rather than a decision you have made is exactly the person most able to leave first. Treating the period as your safety net can quietly cost you the very people you most wanted to keep.

What Leaning on It Actually Costs

Here is the number that reframes the stakes. France’s labour statistics service, DARES, finds that roughly one permanent contract in five ends during the probation period. That figure is not, by itself, bad news: sometimes the trial is doing exactly its job. Whether it is the system working or an expensive discovery depends entirely on when you first saw the signal. If the trial is confirming something your process already flagged, fine. If it is the first time you learned the person could not do the job, you paid full price for a lesson you could have had earlier.

And that price is not the light paperwork of ending the contract. When a trial ends in a miss, you pay for the search again, you carry the empty seat again, and you have lost the weeks the person spent ramping up. We put real numbers on both halves of that bill in what a bad hire really costs a small team and in what an unfilled role costs while the seat stays empty. For a first hire the disruption is outsized: a team of five that loses its sixth person in month two is back to square one, minus the time and the momentum it spent getting there.

Make the Trial a Confirmation, Not a Discovery

The fix is not a longer trial or a harder heart at the end of it. It is moving the evaluation earlier, so the probation period confirms a decision you already have evidence for rather than making that decision for you. None of this requires an HR department. It requires a little structure where there is currently a conversation.

• Decide the two or three things the role genuinely requires before you meet anyone, and write them down.
• Ask every candidate the same questions and press for real examples of past work, not impressions or hypotheticals.
• Keep a short written note at each step, so the decision rests on evidence gathered across the process, not on the last good conversation you remember.

We walk through the interview half of this in how to run your first hiring interview, and the case for scoring at every stage rather than at the interview alone in why you should evaluate candidates across the whole process. Do that, and the probation period returns to its proper job: a final check on the few things you genuinely cannot see until someone is doing the work, rather than a substitute for the many you can.

This is the logic Kynto is built on. It scores every candidate against the criteria you set and keeps the reasoning visible across sourcing, screening, and interviews, so by the time someone starts, the trial is confirming a decision you can already explain rather than making it in the dark. The judgment stays yours. What changes is how much evidence you hold before the offer, so the probation period stops carrying weight it was never meant to bear.

Key Takeaways

• The probation period is a safeguard, not an evaluation. Leaning on it to decide whether someone can do the job is the latest and most expensive place to find out.
• Around one permanent contract in five ends during the trial (DARES). Whether that is the system working or a costly surprise depends on how early your process saw the signal.
• A little structure before the offer, fixed criteria, the same questions, notes at each step, turns the probation period into a confirmation instead of a gamble.

FAQ

Can I end a probation period without giving a reason?

In principle yes: during the trial either side can end the contract without the procedure a later dismissal requires, subject to the notice period that grows with tenure. But “without formality” describes the paperwork, not the cost. Ending a trial still means running the whole search again and carrying the empty seat, which is why the ease of ending it is a poor reason to skip evaluating well up front.

How long should the probation period be for a first hire?

The maximum is set by law by category, two months for employees, three for technicians and supervisors, four for managers, renewable once only where a collective agreement allows. Use the length that lets you see real work, not the longest one available. A longer trial is not a substitute for a good evaluation; it just delays a decision you should be equipped to make sooner.

Does the probation period replace evaluating a candidate properly?

No. It is the most expensive place to run the check. Almost everything you would learn in a trial, whether the person can do the core of the role, how they handle ambiguity, whether the motivation is real, you can gather evidence for before the offer with a consistent process. Save the trial for the handful of things you truly cannot see until someone is on the job.