Number of economically inactive people due to long-term sickness in the UK 2000-2025

In the fourth quarter of 2025, an estimated 2.8 million people were economically inactive due to being on long-term sickness leave in the UK, slightly down from a peak of over 2.84 million people in the fourth quarter of 2023. This figure has been rising considerably since 2019, when there were just over two million people economically inactive for this reason. Since the third quarter of 2021, long-term and temporary sickness has been the main reason that people were economically inactive, accounting for 32.1 percent of economic inactivity in the fourth quarter of 2024. 

What is driving the increase in long-term sickness?

It is unclear if there are any specific reasons for the continued growth of long-term sickness in the UK. As of 2022, some of the most common health conditions cited as the reason for long-term sickness were to do with mental health issues, with 313,00 suffering from mental illness, and a further 282,000 for depression-related illness. It is also likely that the COVID-19 pandemic caused an impact, with around 1.8 million people in April 2022 reporting an experience of Long Covid. In general, while the majority of people on long-term sick leave are over the age of 50, there has been a noticeable increase in those aged under 35 being off on long-term sickness. Between 2019 and 2022, the number of those aged between 16 and 34 on long-term sickness increased by 140,000, compared with just 32,000 for those aged between 35 and 49.

UK labor market set to continue cooling in 2026?

In 2022, the UK labor market was slightly more weighted in favor of workers and people looking for work than usual. Unemployment fell to historical levels, while job vacancies reached a peak of more than 1.3 million in May. Wage growth also remained strong during this period, although as this occurred at a time of high inflation, wages fell in real terms for a long period between November 2021 and June 2023. Although the job market continued to show signs of resilience, this changed in 2025. Towards the end of that year, the UK unemployment rate was 5.1 percent, a post-pandemic high, with job vacancies falling to their lowest level since May 2021.