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Objectives: This study investigated the association between workplace discrimination and low back pain among Korean workers and explored the role of labor union in the association.
Methods: We analyzed a cross-sectional survey of 28,532 workers from the 3rd Korean Working Conditions Survey (2011), a nationally representative dataset in South Korea. Experience of workplace discrimination for five different reasons was assessed using the questions: "Over the past 12 months, have you ever experienced workplace discrimination based on your: (a) age, (b) education, (c) birth region, (d) sex, and (e) employment status?" Experience of low back pain within a 12 month period was measured using a yes/no question. Labor union membership was coded into three categories: (1) workers at workplaces without a labor union; (2) workers without union membership at workplaces with a labor union; (3) workers with union membership.
Results: In workplaces without a labor union, low back pain was statistically significantly associated with workplace discrimination based on age (OR: 2.02, 95% CI: 1.73, 2.35), education (OR: 1.45, 95% CI: 1.23, 1.71), birth region (OR: 1.42, 95% CI: 1.10, 1.84), sex (OR: 2.22, 95% CI: 1.81, 2.73), and employment status (OR: 2.33, 95% CI: 1.99, 2.72) after adjusting for covariates including physical work factors. However, no significant association was observed among workers at workplaces with a labor union regardless of workers' union membership.
Conclusions: Workplace discrimination was associated with low back pain only in workplaces without a labor union. Presence of labor union at workplaces may have a protective effect on workers' low back pain against workplace discrimination.
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| http://dx.doi.org/10.1016/j.socscimed.2017.01.057 | DOI Listing |
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