What Is a Probation Period and What Are My Rights?

Probation periods feel like a legal category and are not one. UK employment law contains no concept of probation. It is purely a contractual arrangement, and understanding that clears up most of the confusion about what it does and does not change.

What probation actually is

A defined period at the start of employment, usually three or six months, during which both sides assess whether the role works. The contract sets the length, what happens at the end, and which terms differ during it.

Because it is contractual, everything about it lives in your contract. If your contract does not mention probation, you are not on probation, whatever was said during an induction.

What genuinely changes

Notice period. The most common difference. Contracts frequently set one week either way during probation, rising to the full period on successful completion. That is lawful provided it meets the statutory minimum, which for service under two years is one week.

Some benefits. Private medical insurance, enhanced sick pay, life cover and season ticket loans are often deferred until probation ends. Pension auto-enrolment has its own statutory timetable and cannot be deferred indefinitely, so that one is not at the employer’s discretion.

Access to internal moves. Many employers restrict applying for other internal roles until probation is complete. That is a policy, not a legal restriction.

What does not change

This is the part most often misrepresented, sometimes by employers who believe it themselves.

Statutory rights apply from day one. National Minimum Wage, working time limits, rest breaks, paid holiday accrual, statutory sick pay where the earnings conditions are met, and itemised payslips all apply immediately.

Discrimination protection applies from day one, and in fact from before it, since recruitment is covered too. Dismissal because of a protected characteristic, including pregnancy, disability, race, religion, age, sex or sexual orientation, is unlawful whether you have been there a week or a decade.

Automatically unfair dismissal protections apply from day one. These cover dismissal for whistleblowing, for asserting a statutory right, for trade union membership or activity, for health and safety reasons, and for taking family leave. No qualifying service is required for any of them.

Holiday accrues from day one, at the statutory 5.6 weeks a year pro rata. If you leave during probation, untaken accrued holiday must be paid in the final pay.

The two-year point that actually matters

Ordinary unfair dismissal protection generally requires two years of continuous service. That threshold exists independently of probation, which means an employee at month seven with probation passed has no more protection against ordinary unfair dismissal than one at month five still on probation.

This is why probation feels legally significant when it is not. The vulnerability comes from the two-year rule, and it persists long after probation has ended. Passing probation is a contractual milestone, not a legal one.

Being dismissed during probation

A reasonable employer will follow a fair process even where not legally compelled to: raise concerns early, give a genuine chance to improve, and confirm the outcome in writing. Many do, partly because it reduces legal risk and partly because it is decent practice.

They must give at least contractual notice, or statutory notice if that is longer, or pay in lieu where the contract permits it. They must pay all accrued holiday and any outstanding wages, and they cannot withhold earned pay as a penalty.

If you believe the real reason was discriminatory or otherwise automatically unfair, length of service is irrelevant and a claim is possible. Tribunal time limits are short, generally three months less one day from the dismissal, so advice should be taken quickly rather than after thinking it over.

Extensions

An employer can only extend probation where the contract allows it. Where it does, an extension should come with written reasons, specific objectives and a clear review date.

An extension with no explanation and no targets says more about the employer than about you. Ask, in writing, what specifically needs to change and how it will be measured. A manager who cannot answer that has not thought about it.

Passing it

Many employers simply let the date pass without comment, and the contract then treats probation as completed. Others require written confirmation before the longer notice period and deferred benefits take effect.

If the date passes and nothing is said, send a short email asking for confirmation. It matters because an employer who later claims you were still on probation will be relying on the absence of exactly that message, and because the benefits that unlock at that point are worth having.

Resigning during probation

The shorter notice period cuts both ways. If a job is clearly wrong, one week is considerably easier to serve than three months.

There is no obligation to complete probation and no special penalty for leaving during it, beyond a short stint on a CV and whatever the reference says. Both are usually less costly than staying somewhere unsuitable for a year to make the dates look tidier.