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Short answer

Yes, you can refuse annual leave at Christmas if you've got a genuine business reason. In Ireland the employer decides when annual leave is taken, but you have to take the employee's family responsibilities and need for rest into account, and they still have to be able to take their full statutory leave during the leave year. Cancelling leave you've already agreed is a different matter - we really wouldn't, unless it's a genuine emergency.

Nobody likes saying no to Christmas. We certainly don't. But if four people want the 29th and you can only spare two, somebody's going to hear it - so it's worth getting the how right, because that's what people remember long after they've forgotten the actual dates.

How quickly should I answer a Christmas leave request?

Within a week, ideally. Unlike the UK, Ireland doesn't have a set notice period for turning leave down - but the longer you leave it, the more plans someone makes around a yes that isn't coming, and the harder the conversation gets.

Our rule is to answer every Christmas request within a week and to have them all answered by early November. If you're not sure yet, say so - "let me check the cover and I'll come back to you by Friday" - and actually come back by Friday.

The other side of this: if you're telling someone to take leave on different dates instead, the law expects you to consult them at least a month before that leave starts. Another reason to do all this in October and November rather than December.

Why we built this bit
Requests answered while they're still fresh

In Book Time Off the approver gets an email the moment someone books, with approve and decline buttons right there - no logging in. If it sits there unanswered, they get a reminder the next working day, then another a few days later. So requests don't go stale in someone's inbox until December. It won't make the decision for you, but it does stop you forgetting to make it.

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Can I cancel annual leave I've already approved?

There's nothing in the Act that specifically stops you, but honestly, we'd only ever do it for a real emergency. Check the contract first, because some say how and when agreed leave can be changed. And cancelling Christmas leave someone's already planned around - flights home, family over - is about the quickest way we can think of to lose a good member of staff.

If you genuinely have to, do it face to face first, explain exactly why and offer to cover any money they lose - cancelled flights, deposits, that sort of thing. Then ask whether part of the leave could still work, because often it can. And remember you still have to take their family responsibilities into account, and they still need to be able to take their full leave during the year.

The better fix is not getting into that position. If you're not sure you can spare someone, don't say yes yet.

What counts as a good reason to say no?

Anything that's genuinely about the business. Not having enough cover is the obvious one. Others we'd count:

What doesn't count is "I just don't fancy it", or saying no to one person and yes to someone else in the same position. That's the stuff that turns into grievances - and if the difference has anything to do with family status, religion, age or any of the other protected grounds, a lot worse than a grievance.

Busy dates
Block the days you can't spare in advance

Book Time Off lets you block dates for the whole company - your busiest trading days, stocktake, whatever it is - so people can't book them in the first place. It means fewer requests you have to turn down, because the answer's on the calendar before anyone asks. It's not clever, but it saves a lot of awkward "no"s.

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How to say no without the awkward conversation

You can't make it painless, but you can make it a lot less awkward. What works for us:

We've had to tell someone they couldn't have the week they wanted because someone else had already booked it. There's no nice way of saying it. What made it easier wasn't the wording - it was being able to say "the rule's been in everyone's inbox since October". It turned it from us saying no into the rule saying no, which is a lot easier for both sides.

Most of this stops being an issue if everyone knows the rules up front. We've written up the whole approach in how to manage Christmas annual leave, and if it's the "who gets it" bit you're stuck on, there's who gets Christmas off?

What if they go anyway?

Then it's unauthorised absence, and you can deal with it through your normal disciplinary procedure. But talk to them first. In our experience it's almost never someone deliberately ignoring you - it's a misunderstanding about whether it was actually refused, or something's happened at home. Which is another good reason to put every no in writing.

If it really was "I asked, you said no, I went anyway", that's a conduct issue and it's fair to treat it as one. Just follow your own procedure, be consistent with how you'd handle it any other time of year and keep it proportionate - the WRC has a code of practice on disciplinary procedures that's worth a read before you do anything formal.

Sources

Irish Statute Book Organisation of Working Time Act 1997, section 20 · When annual leave is taken. Checked October 2026.
Citizens Information Annual leave · The leave year and carry-over. Checked October 2026.
WRC Employment equality · The nine grounds. Checked October 2026.
WRC Code of Practice on Grievance and Disciplinary Procedures · Checked October 2026.

FAQs

Can my employer refuse my annual leave at Christmas in Ireland?
Yes. In Ireland the employer decides when annual leave is taken, so they can refuse particular dates if there's a genuine business reason, like not having enough cover. They have to take your family responsibilities and need for rest into account, and you still have to be able to take your full statutory leave during the leave year.
Can my employer cancel approved annual leave in Ireland?
There's nothing in the Organisation of Working Time Act that specifically stops it, so check your contract. Cancelling leave someone has planned around causes real damage, so most employers only do it in a genuine emergency and offer to cover any costs. You still need to be able to take your full statutory leave during the year.
Can I refuse leave if they've already booked flights?
Legally, yes, if you haven't already agreed to it. But if someone has booked flights on the back of a yes, even a vague one, we'd think very hard before saying no. If you have to, offer to cover what they lose. It's the fair thing to do and it's cheaper than losing them.
Can I refuse leave because it's our busiest time?
Yes, being short of cover in your busiest period is a perfectly good business reason. It's much better to say in advance which dates are off limits, in your Christmas email or by blocking the dates, so people don't ask for them in the first place.
Who wrote this

The team behind Book Time Off. We run a small business ourselves, so we've had the Christmas leave clashes, the lost requests and the end-of-year leave pile-ups first hand - that's a big part of why we built it. Everything legal here is checked against Citizens Information, the Workplace Relations Commission and the Irish Statute Book, and we keep it updated when the rules change.

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Not legal advice

This is practical, general information for employers in Ireland. If you've got a dispute brewing or something unusual in a contract, check with the Workplace Relations Commission (its information service is free) or an employment solicitor.