Occupational Medicine 2018;68:290 LETTER TO THE EDITOR doi:10.1093/occmed/kqy048 with the new-onset severe depressive symptoms among both sexes, with an especially strong association among females. Given the sex difference in odds ratio, the asso- ciation between temporary work and subsequent depres- Dear Sir, sive symptoms should be studied further. Kim et al. investigated the relationship between tempo- Finally, temporary work is also associated with psycho- rary work and depressive symptoms . The authors logical distress, especially in men and unmarried women classified workers into day labourers, fixed-term workers . Taken together, comprehensive study is needed to and permanent workers. The Center for Epidemiological determine the causal association between employment Studies Depression scale (CES-D) 11-item version was status and depressive symptoms. used to assess depressive state. Compared with day labourers, the mean values of CES-D 11 scores in per- Tomoyuki Kawada manent and fixed-term workers were significantly lower. Department of Hygiene and Public Health, I have some concerns about their study. Nippon Medical School,1-1-5 Sendagi, First, Hämmig and Bauer conducted a cross-sectional Bunkyo-Ku, Tokyo 113-8602, Japan study to investigate the association between working con- e-mail: email@example.com ditions and health status ; psychosocial working con- ditions, such as work–life conflict, showed a significant References association with physical and mental health. Fan et al. also reported the association between stress and men- 1. Kim W, Kim TH, Lee TH, Ju YJ, Chun SY, Park EC. tal illness ; job insecurity was significantly associated Temporary work and depressive symptoms in South Korean with scales scores of the Beck Depression Inventory-II workers. Occup Med (Lond) 2017;67:421–424. and the Spielberger Trait Anxiety Inventory. Temporary 2. Hämmig O, Bauer GF. Work, work-life conflict and health work was closely associated with depressive symptoms in an industrial work environment. Occup Med (Lond) 2014;64:34–38. in these studies, which was in concordance with data by 3. Fan LB, Blumenthal JA, Watkins LL, Sherwood A. Work Kim et al. and home stress: associations with anxiety and depression Second, Jang et al. reported a prospective study to symptoms. Occup Med (Lond) 2015;65:110–116. understand the effect of temporary work on new-onset 4. Jang SY, Jang SI, Bae HC, Shin J, Park EC. Precarious severe depressive symptoms . They used CES-D employment and new-onset severe depressive symptoms: a 11-item version and adopted a generalized estimating population-based prospective study in South Korea. Scand equation. Odds ratios of temporary work for the new- J Work Environ Health 2015;41:329–337. onset severe depressive symptoms were significant (1.52 5. Kachi Y, Otsuka T, Kawada T. Precarious employment and (1.02–2.25) in men and 4.19 (1.70–10.32) in women). the risk of serious psychological distress: a population- In addition, the transition from permanent work to based cohort study in Japan. Scand J Work Environ Health another employment status was significantly associated 2014;40:465–472. © The Author(s) 2018. Published by Oxford University Press on behalf of the Society of Occupational Medicine. All rights reserved. For Permissions, please email: firstname.lastname@example.org Downloaded from https://academic.oup.com/occmed/article-abstract/68/4/290/5001601 by Ed 'DeepDyve' Gillespie user on 17 June 2018
Occupational Medicine – Oxford University Press
Published: May 23, 2018
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