Millions of UK workers are “holiday hoarding”. It’s making them sick

July 2025

Nearly two-thirds of UK workers take less than half of their annual leave by mid-year, according to research commissioned by Breathe HR, with findings linking delayed leave to higher levels of burnout and sickness.

Millions of workers are holiday hoarding

New research reveals that millions of UK workers are “holiday hoarders”, and it could be making them sick.

In a poll of over 2,000 UK adults, commissioned by Breathe HR, two-thirds (66%) of workers said they typically take less than half their holiday by halfway through the year (2nd July). 1 in 3 (33%) take less than a quarter of their leave by the 2nd July annually.

This is having an impact on employee wellbeing. The data shows that workers who holiday hoard are at risk of sickness and burnout. Of the “holiday hoarders” taking less than half their holiday by 2nd July, the survey found: 

  • More than 1 in 4 (26%) take an above average number of sick days in a typical year (more than six)

  • Nearly half (48%) often feel burnt out at work by the autumn

There are currently over 34 million people employed in the UK. This means an estimated 22.5 million workers are typically taking less than half their holiday by 2nd July, and around 10 million workers are at risk of burnout by autumn, according to Breathe HR’s findings.

There is a solution. The research suggests that when workers spread leave evenly across the year, they are happier, healthier, and more productive. When workers were asked about the impact of taking regular breaks from work: 

  • Nearly 4 in 5 (79%) said they feel happier when they spread their leave

  • Nearly 3 in 4 (73%) said they feel more productive when they spread their leave

  • Nearly three-quarters (72%) feel less run down and/or burnt out when they take regular breaks throughout the year 

Despite the clear benefits, workloads and attitudes towards taking time off are among the factors preventing staff from taking regular breaks:

  • 1 in 5 (21%) workers aren’t encouraged by their employer or manager to take a holiday

  • Nearly 1 in 3 (29%) feel their workload prevents them from taking holiday
  • More than 1 in 4 (28%) find it difficult to find out how much holiday they have used and have left 

A separate 2024 Breathe HR report found that 42% of workers who didn’t use their full annual holiday allowance said staff shortages made it difficult to take time off. 

To raise awareness of the holiday hoarding crisis and its impact, Breathe HR is calling on employers to encourage staff to spread breaks evenly throughout the year, and build cultures where staff are encouraged to take the time off that they are entitled to.

To help employers battle burnout and holiday hoarding, Breathe HR is making free resources available to businesses through their Burnout Hub. Tools to help track and monitor holiday and burnout are also available through Breathe HR. 

 

Phil Coxon, Managing Director at Breathe HR said: 

“We’re in a burnout epidemic. To protect our people and business performance, wellbeing cannot be an afterthought; it must be built into the core of how companies operate. Encouraging staff to take regular holidays is a huge part of this.

“I don’t just mean a once in a blue moon reminder to take a break. Words must be backed up by action. Time off has to be genuinely feasible for staff and actively encouraged throughout the year. That means leaders must keep workloads manageable, regularly remind teams to take breaks, role-model the behaviour themselves, and ensure that finding policy information and booking leave is easy.

“Despite what hustle culture would have us believe, we’re not machines. No one can think strategically, make great decisions, or innovate without proper time off to rest and recharge. That’s why we at Breathe HR are calling on employers to help end holiday hoarding, and ensure staff can leverage their leave evenly across the year and protect their mental health.” 

Margaret Lewis, CEO at Sheffield Mind, comments:

“Taking regular breaks from work is essential - it enables us to refresh, unwind and spend time on ourselves and our loved ones. We can return to work feeling reinvigorated and ready for action! Holiday hoarding may be related to anxiety, the idea that we might need that time off to deal with an emergency, or that we’ll be judged by colleagues and management if we book annual leave. But it can lead to burnout - and that’s no good for the individual or the Organisation".

The findings come as separate research reveals that 85% of UK workers have experienced symptoms of burnout or exhaustion due to work, with nearly half needing to take time off work due to their mental health. 

Overall, the hidden cost of employee sickness on employers is more than £100 billion per year, with poor mental health costing UK employers £51 billion per year.