"I need next Friday off" — how much notice is reasonable? Can you reject a leave request because it wasn't submitted early enough? The answer depends on a mix of UK employment law, your company policy, and common sense. This guide covers the legal framework, typical notice requirements, the exceptions you need to allow for, and how to enforce notice periods without creating resentment.
The Employment Rights Act 1996 (section 88 and schedule to the Working Time Regulations 1998, regulation 15) sets out a default position:
However — and this is the important part — these are default rules that can be overridden by contract or policy. Most employers replace them with their own notice requirements, which is perfectly lawful provided the requirements are reasonable and applied consistently.
In practice, very few employers rely on the statutory "twice the length" rule. It works for a week's holiday (2 weeks' notice) but becomes impractical for longer absences — 4 weeks of leave would require 8 weeks' notice under the default rule, which is excessive for most workplaces.
Notice requirements exist for legitimate business reasons:
While there is no universal standard, the most common policies in UK businesses follow this pattern:
| Leave duration | Typical minimum notice | Rationale |
|---|---|---|
| 1–2 days | 1 week | Enough to check coverage and rearrange meetings |
| 3–5 days (1 week) | 2 weeks | Time to arrange cover and handle handovers |
| 1–2 weeks | 1 month | Longer absence needs more planning |
| 2+ weeks | 6–8 weeks | Extended absence may need temporary cover hired |
These are guidelines, not legal requirements. Your policy should reflect the realities of your business. A small team where one absence means significant disruption might need longer notice; a large team with built-in redundancy might need less.
No notice policy should be applied rigidly. Some types of leave cannot and should not require advance notice:
Employees cannot predict illness. Your sick leave policy should require notification as soon as reasonably possible (typically by a certain time on the first day of absence), but it cannot require advance notice. Penalising employees for not giving notice of sickness is both unfair and likely to encourage presenteeism.
Under the Employment Rights Act 1996 (section 57A), employees have the right to take reasonable unpaid time off to deal with emergencies involving dependants (children, spouse, parents, someone who relies on them). This is a statutory right and cannot be restricted by a notice period. The employee must inform their employer as soon as reasonably practicable.
A death in the family is not foreseeable. Your policy should allow compassionate leave to be taken immediately with retrospective notification. Since April 2020, bereaved parents have a statutory right to 2 weeks' leave under Jack's Law.
Some medical appointments (especially NHS) are given with short notice and cannot be easily rescheduled. While you can ask employees to try to book appointments outside working hours, a rigid notice requirement for medical leave is unreasonable.
Employees must attend jury service when summoned. They should give you as much notice as possible, but the summons may arrive with only a few weeks' warning. You cannot refuse time off for jury service.
Having a policy is one thing; enforcing it consistently is another. Some best practices:
If you reject a request because it doesn't meet the notice requirement, the employee still has the right to take their statutory leave entitlement before the leave year ends. You can control when they take it, but you cannot prevent them from taking it entirely.
If an employee consistently has leave rejected and ends the year with untaken entitlement, this creates a legal risk for the employer — particularly under the Working Time Regulations, which require that employees actually take their statutory minimum leave.
LeaveApprove lets you configure notice periods per leave policy, so enforcement is automatic and consistent: