Slough has been named as the UK's hardest-working area, according to new data.
The research, compiled by Re-flow Field Management using Office for National Statistics figures, ranked areas by average weekly hours worked in 2025.
Slough topped the list with an average of 35.9 hours per week.
Ashley Wing, CMO of Re-flow Field Management, said: "The gap between the highest and lowest ranked areas points to structural differences in local labour markets rather than simple variations in effort.
"Areas near the top of the ranking often have a higher concentration of full-time, office-based and professional roles, where longer contracted hours and unpaid overtime are more common, particularly in commuter hubs and large employment centres."
That figure is nearly 10 per cent above the UK average of 32.8 hours and represents an increase of 1.8 per cent on the previous year.
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The analysis used mean weekly hours to rank each area, with year-on-year growth used to break ties.
South Holland and Rutland followed closely in second and third place, each recording 35.7 hours.
In contrast, Moray in Scotland recorded the shortest working week at just 30.1 hours, nearly three hours below the UK average.
This marks a decline of 0.8 per cent from the previous year, according to the data.
Mr Wing said: "Overall, the data highlights how uneven working time has become across the UK."
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