A probation review is the highest-stakes review you will run with most people. The decision is binary: keep them or let them go. Yet most managers handle probation reviews like an afterthought, scheduling them in the final week of the period and relying on a vague sense of how things have been going. The result is usually one of two failure modes: a confirmation that lacks substance, or a difficult conversation that the person never saw coming. Both are avoidable with the right preparation, and a probation review done well is one of the most respectful and useful conversations a new joiner can have.
The probation review is the formal check-in, not the moment the assessment begins. If the assessment starts in week eleven, you have already done the new hire a disservice.
What probation actually tests
Probation is not just a chance to confirm a hire. It is a structured way to test the most important assumptions you and the person made when they accepted the offer. Knowing what is actually being tested keeps the review grounded in evidence rather than feel.
- CapabilityCan the person do the work, at the level the role requires? Probation is short, so look at the work that has been clearly theirs and judge it against your standard, not against your tolerance for new joiners.
- DirectionAre they moving in the right direction? Even if the work is not yet at full speed, you should see steady week-on-week progress. A new joiner who looked the same in week ten as week three is a yellow flag.
- FitDo they slot into how the team works? Fit is not about agreeing with everyone - it is about whether they take feedback well, work openly, and contribute to the team rather than just to themselves.
- Reciprocal interestProbation runs both ways. The person is also deciding whether the role and team are right for them. Surface that explicitly so the conversation does not turn one-sided.
The week-by-week prep
Probation is short enough that the prep can be evenly spaced across the period. The work you do in week three matters more than the work you do in week eleven, because by then your view is already mostly formed.
- Weeks 1-2Set explicit success criteria with the person, in writing, in your second one-to-one. What does "passing probation" look like? What would put it at risk? Most probation conversations get hard because this step gets skipped.
- Weeks 3-6Use one-to-ones to give frequent, specific feedback. Praise what is working; flag what needs to improve. Take notes after each catchup so you have a record by review time.
- Weeks 7-9If something is off-track, this is when you say so clearly. Probation extensions and not-passing decisions both depend on the person having had a real chance to course-correct.
- Weeks 10-11Gather peer input from the people who have worked closely with them. Pull together the evidence: outputs, peer feedback, growth indicators, fit signals. Draft your view.
- Week 12Hold the review. By now there should be no surprises in either direction. The conversation is about confirming the decision and agreeing what comes next.
The three possible outcomes
Every probation review ends in one of three places. Knowing them in advance keeps you honest about which one is the right call rather than which one is the easiest.
- PassConfirm with energy, not just relief. A confirmed hire deserves a real conversation about what comes next: what the next ninety days should look like, what they are excited to take on, and how they will keep developing.
- ExtendUse sparingly and only when there is a real signal that more time will resolve. Extensions can be a kindness or a delay tactic; the test is whether you can name specifically what needs to change in the extra weeks.
- Not passHard but sometimes right. If the evidence is clear, do not soften it into an extension to avoid the conversation. The person deserves to find a role that suits them, and your team deserves not to carry an unresolved decision.
Documenting it well
Probation outcomes carry weight beyond your team. HR will need a clear record. The person may need to share the outcome with their next manager. Future legal or process reviews depend on the document being honest, specific, and well-evidenced.
- Specific examplesEvery claim in the review should be backed by a concrete example. "Strong communicator" is generic. "Led the demo to the customer team in week six and handled the difficult question on pricing well" is something both of you can stand by.
- No surprises ruleAnything in the document should already have been said in conversation. If something is appearing here for the first time, you have not finished doing your job in the period.
- Forward-lookingEven when passing, the document should set up the next ninety days. What good looks like next, what to focus on, what support is in place. The probation document becomes the starting point for their first real review cycle.
- Shared, not deliveredWalk through the document with the person rather than handing it over and waiting for a reaction. Their input refines it; your willingness to discuss it builds trust.
Frequently asked questions
Run probation reviews on real evidence
Manager Toolkit pulls a new hire's catchups, targets, and pinned moments into a probation template so the review is grounded in the period, not last week.