Long working hours

Long working hours has been studied in 6 papers since 2021: 4 observational studies in people, 2 reviews; 3 in the past year. The newest paper, Nov 11, 2026: “Prevalence and determinants of hypertension among adults attending hospitals in Arsi, Oromia, Ethiopia: Cross-sectional study”.

Exposure

6 papers study it5 findingsUpdated

2 new papers in 30 daysSee all 6 papers on long working hours

At a glance

The findings reach people, from one lab or study. 5 independent labs in 5 countries.

“Long working hours (≥11.0 hr/day) were significantly associated with an increased risk of IHD in the total sample (hazard ratio, 2.92; 95% confidence interval, 1.15 to 7.39)”
Long Working Hours and Risk of Ischemic Heart Disease Among Japanese Workers: The Jichi Medical School Cohort StudyJournal of preventive medicine and public health = Yebang Uihakhoe chi2026doi:10.3961/jpmph.25.577

None of its findings points the other way.

Humans: a single group. Cells, worms or flies and mice: nothing yet.
  • 5 independent labs in 5 countries
  • Funders: Centers for Disease Control and Prevention and 5 more
  • 1 of 5 findings with company ties
  • Humans4

What is long working hours linked with?

5

Studies link long working hours with 5 measures, among them illness in middle and older age, ischemic heart disease and ischemic heart disease mortality.

Illness in middle and older age

upin humans1

1 study
  1. Long working hours are associated with illness in middle and older age in humans.

    “long working hours in youth are associated with a higher probability of illness in middle and older age.”

    Humans

    Long working hours in young adulthood and later-life health: evidence from China

    Applied Economics

Ischemic heart disease

upin humans1HR 2.92

1 study
  1. Long working hours are linked with a higher risk of ischemic heart disease in humans (HR 2.92, 95% CI 1.15 to 7.39).

    “Long working hours (≥11.0 hr/day) were significantly associated with an increased risk of IHD in the total sample (hazard ratio, 2.92; 95% confidence interval, 1.15 to 7.39)”

    Humans≥11.0 hr/day12 yearsn = 6,670

    Long Working Hours and Risk of Ischemic Heart Disease Among Japanese Workers: The Jichi Medical School Cohort Study

    Journal of preventive medicine and public health = Yebang Uihakhoe chi

More on Ischemic heart disease

Ischemic heart disease mortality

upin humans1RR 1.17

1 study
  1. Long working hours raise the risk of ischemic heart disease mortality in humans (RR=1.17, 95% CI [1.05 to 1.31]).

    “working more than 55 hours per week was associated with a 17% increased risk of ischemic heart disease mortality (RR=1.17, 95% CI [1.05 to 1.31])”

    Reviewmore than 55 hours per week

    Long working hours and the risk of ischemic cardiac death: A systematic review and a meta-analysis

    La Tunisie medicale

Early menopause

upin humans1

1 study
  1. Long working hours raise the risk of early menopause in humans.

    “working over 40 h per week and frequent heavy lifting, and rotating night shift work increased the risk of earlier menopause”

    Review>40 h per weekfemales

    Association of psychosocial factors at work with fertility and menstrual disorders: A systematic review

    Japan journal of nursing science : JJNS

More on Early menopause

Mortality

no changein humans1HR 1.45

1 study
  1. Long working hours are associated with mortality in humans (full sample) (HR 1.45, 95% CI: 0.86, 2.45).

    “working 50 hours or more per week is not associated with an increased risk of mortality, for the full sample (1.45 [95% CI: 0.86, 2.45])”

    Humansfull sample1992-2016

    Does an increase in working hours affect mortality risk? The relationship between working hours and mortality among the older population

    Work (Reading, Mass.)

Latest

Dec 2025: 0Jan 2026: 0Feb 2026: 1Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0Sep 2026: 0Oct 2026: 0Nov 2026: 23 papers in 12 months