“…Our earlier studies, based on the Finnish Public Sector study, indicated that long working hours, several consecutive night shifts and short (<11 hr) recovery periods between the shifts are associated especially with short (1–3 days) sickness absence (Ropponen et al, 2019) but also with fatigue and sleep disturbances (Härmä, Karhula, Puttonen, et al, 2018; Härmä, Karhula, Ropponen, et al, 2018). Yet, these studies did not investigate age group differences, and it could be assumed that younger and older workers in female‐dominated social and health sector might react differently for working‐hour characteristics, and consequently, rates of sickness absence could differ (Cai et al, 2019; Stock et al, 2019; Ticharwa, Cope, & Murray, 2019).…”