Emotional Labor and Sleep Quality of Dental Hygienists: Mediating effect of Depression

치과위생사의 감정노동과 수면의 질 : 우울의 매개효과

  • Park, Eun-Ji (Dept. of Education Public Health, Hanyang University) ;
  • Kim, Yeon-Ha (Dept. of Nursing, Korea National University of Transportation) ;
  • Lee, Soo-Jin (Dept. of Occupational and Environmental Medicine, Hanyang University)
  • 박은지 (한양대학교 보건교육전공) ;
  • 김연하 (한국교통대학교 간호학과) ;
  • 이수진 (한양대학교 직업환경의학과)
  • Received : 2018.03.07
  • Accepted : 2018.03.21
  • Published : 2018.03.30


Objectives: The purpose of this study was to test the mediating effect of depression in the relationship between emotional labor and quality of sleep among dental hygienists. Methods: A purposive sample of 224 subjects in Seoul and Gyeonggi-do Province was recruited for convenient sampling. Data were analyzed using descriptive statistics, correlation, and multiple regression using Baron and Kenny steps for mediation. Results: The mean scores for overall emotional labor, quality of life, and depression were $33.14{\pm}5.55$, $7.49{\pm}2.82$, and $19.20{\pm}10.45$, respectively. They were significantly correlated with each other. Depression had a mediating effect(${\beta}=.52$, p<.001) in the relationship between emotional labor and quality of sleep(Sobel test: Z= 6.82, p =.001). Conclusions: The findings of this study suggest that intervention programs focusing on preventing depression are highly recommended to improve quality of life among dental hygienists in relation to emotional labor.


  1. Ahn JS, Kwon MH. A study on the emotional labor dimensions of hotel industry, Tourism Reserch 2004;19:187-205
  2. Baek JT, Cho YC. The relationships between emotional labour, depressive symptoms and presenteeism among counselors in call centers. Journal of the Korea Academia-Industrial 2015;16(6):4086-4097
  3. Beck AT, Alford BA. Depression: causes and treatment, 2nd ed. Pennsylvaina: University of Pennsylvania Press; 2009
  4. Biddle D, Naismith S, Griffiths K, Christensen H, Hickie IB, et al. Associations of objective and subjective sleep disturbance with cognitive function in older men with comorbid depression and insomnia. Sleep Health. 2017;3(3):178-183
  5. Cho SK, Jung HS. A study on response of job stress and emotional labor of the sales workers of department store, Kor J Occup Health Nurs 2006;15(2):83-93
  6. Choi HJ, Bang HJ, Chung EY, Seo YJ. Factors that affect the level of emotional labor in dental hygienists.J Dent Hyg Sci. 2014; 14(3): 295-301
  7. Chu S, Ryou H, Bae K, Song J, Lee S, et al. Association between emotional labor and symptoms of depression among bankers. Korean J Occup Environ Med. 2010; 22(4): 316-323
  8. Diestel S, Rivkin W, Schmidt KH. Sleep quality and self-control capacity as protective resources in the daily emotional labor process: results from two diary studies. Journal of Applied Psychology 2015;100(3):809-827
  9. Jeong KY, Han OS. A study on emotional labor, emotional burnout, turnover intention of dental hygienist. Journal of Dental Hygiene Science 2015;15(3):280-286
  10. Kim KO, Cho YC. The relationships between emotional labour and depressive symptoms among nurses in university hospitals. Journal of the Korea Academia- Industrial Cooperation Society 2013;14(8):3794-3803
  11. Kim SY, Chang SJ, Kim HR, Roh JH. A study on the relationship between emotional labor and depressive symtoms among Korean industrial service employees. Korean J Occup Environ Med. 2002:14(3):227-235
  12. Knudsen HK, Ducharme LJ, Roman PM. Job stress and poor sleep quality: Data from an American sample of full-time workers. Social Science and Medicine 2007;64(10):1997-2007
  13. Korea Employment Information Service(KEIS). Comparative analysis by emotional labor occupation. news release [Accessed 2015 Oct 14] from:URL:http://news.moel. bpage=106
  14. Kwon MY, Kim JH. Work-related stress and depressive symptoms among dental hygienists. Journal of Korean society of Dantal Hygiene 2015;15(5):917-924
  15. Lee BI, Jung HS, Kim SL, Rhee KY. Factors influencing depression with emotional labor among workers in the service industry. The Journal of Korean Community Nursing 2004;15(4):566-576
  16. Lee HY, Choi SY. Effect of Emotional Labor, Job and Psychosocial Stress, and Fatigue of Beauty Industry Workers on the perceived Symptoms of Musculoskeletal Diseases. J Korea Saf Manag Sci. 2012;14(4):51-58
  17. Lee KS, Lee DB, Kwon IS, Cho YC. Depressive symptoms and their association with sleep quality, occupational stress and fatigue among small-scaled manufacturing male workers. Korean J Occup Environ Med 2011;23(2):99-111
  18. Lee MJ, Kim YN, Lee SY. A study on factors afecting emotional labor of clinical dental hygienists. J Dent Hyg Sci. 2015;15(2):113-118
  19. Luca M, Bellia S, Bellia M, Luca A, Calandra C. Prevalence of depression and its relationship with work characteristics in a sample of public workers. Neuropsychiatric Disease and Treatment 2014;10:519-525
  20. Morris JA, Feldman DC. The Dimension, antecedents and consequences of emotional labor. Academy of Management review 1996;21(4):986-1010
  21. Park HY, Ko HJ, Kim HJ. Relationship with the emotional labor and stress and anxiety to the characteristics of dental hygienist job. AJMAHS 2017;7(4):819-828
  22. Park JH, Kim MS, Cho JW. Dentists' opinions for dental hygienists' role in Korea. Journal of Korean Academy of oral Health. 2010;34(1):88-97
  23. Sohn SI, Kim DH, Lee MY, Cho YW. The reliability and validity of the Korean version of the Pittsburgh Sleep Quality Index. Sleep Breath. 2012 Sep;16(3):803-812
  24. Yoon SU, Nam IS. Relations between emotional labor and sleep health according to the personality types of dental hygienists. Journal of Dental Hygiene Science 2011;11(3):243-249