79% of those aged 55 and over took all their leave, compared to 82% of 18-24-year-olds.
Sarah Crammond, service and support at Timetastic, said: “While senior leaders may have more control over their schedules, those entering the workforce today are navigating a culture where ‘always-on’ availability is often mistaken for commitment.
“It suggests that while younger workers value their wellbeing, they may still feel the weight of traditional work ethics that prioritise ‘grind’ over recovery.”
The main barrier to taking leave was allowance and carry-over issues, which 39.6% cited.
Workload and timing issues followed, with 21.3% saying these prevented them from taking leave.
Other reasons included no need or personal choice (1.7%).
Regarding leave left unused, 18% of workers had zero days remaining, but 26% had more than 15 days left, almost two weeks of unclaimed rest.
Nearly 26% had between 16 and 20 days left.
When asked, 89% of those who left long gaps reported negative impacts on their performance and mental health, with all agreeing that waiting too long to take leave increased their stress.
Women reported feeling these effects more acutely, with 78.9% citing stress compared to 77.9% of men.
A quarter of the workforce (24.7%) waited over six months to take leave.
This prolonged gap was linked to increased stress and reduced wellbeing.
Crammond said: “It’s vital for managers to remember that they can’t pour from an empty cup.
“When a leader is stressed and skipping breaks, that tension filters down, creating a culture where the rest of the team feels guilty for resting.
“It’s vital for managers to remember that they can’t pour from an empty cup.”
She said: “When a leader is stressed and skipping breaks, that tension filters down, creating a culture where the rest of the team feels guilty for resting.
“Managing the load in 2026 is about proactive planning and transparent workloading.
“Using staff planners early on helps prevent holiday logjams, and making it clear that non-essential tasks can be paused during absences removes the fear of work piling up.
“Lead by example and talk about your own holidays to normalise taking time off.”