PT Journal AU Sundstrup, E Hansen, ÃM Mortensen, EL Poulsen, OM Clausen, T Rugulies, R Møller, A Andersen, LL TI Cumulative occupational mechanical exposures during working life and risk of sickness absence and disability pension: prospective cohort study SO Scandinavian Journal of Work, Environment & Health PD 9VL PY 2017 BP 415 EP 425 IS 5 DI 10.5271/sjweh.3663 WP https://www.sjweh.fi/show_abstract.php?abstract_id=3663 DE cohort study; disability pension; exposure; JEM; job exposure matrix; kneeling; lifting; long-term sickness absence; lower body JEM; occupational mechanical exposure; physical demand; prospective cohort study; sickness absence; standing; vibration; working life SN 0355-3140 AB '

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OBJECTIVES ': 'The aim of this study was to determine the prospective association of cumulative mechanical exposure during working life with health-related labor market outcomes.

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METHODS ': 'This prospective cohort study combines data from 5076 older workers (age 49–63 years) from the Copenhagen Aging and Midlife Biobank with a job exposure matrix and a national register containing information on social transfer payment. By coding individual job histories from the Danish version of ISCO-codes (International Standard Classification of Occupations), we calculated cumulative occupational mechanical exposures from a JEM for ton-years (lifting 1000 kg each day in one year), lifting-years (lifting loads weighing ≥20 kg >10 times each day in one year), kneeling-years (kneeling for one hour each day in one year) and vibration-years (whole-body vibration for one hour each day in one year). Cox-regression analyses estimated the relative risk of register-based long-term sickness absence (LTSA) and disability pension with cumulative occupational mechanical exposures throughout working life. Analyses were censored for competing events and adjusted for multiple confounders.

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RESULTS ': 'During the follow-up period, 970 persons (19.3%) had ≥1 episode of LTSA and 85 persons (1.7%) were granted a disability pension. Number of ton-, lifting- and kneeling-years showed an exposure–response association with increased risk of LTSA (P<0.0001). In addition, both long term [≥20 years; hazard ratio (HR) 1.76 95% CI 1.39–2.22] and short term (<10 years; HR 1.20 95% CI 1.02–1.41) exposure to kneeling work increased the risk of LTSA. Lifting-years, but not the other mechanical exposures, were associated with risk of disability pension (HR 1.75 95% CI 1.01–3.04).

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CONCLUSIONS ': 'Cumulative occupational mechanical exposures during working life – such as lifting and kneeling work – increased the risk of LTSA. Importantly, being exposed to lifting increased the risk of disability pension.

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