Impact of daily mood, work hours, and iso-strain variables on self-reported health behaviors

Fiona Jones, Daryl B O'Connor, Mark Conner, Brian Mcmillan, Eamonn Ferguson

Research output: Contribution to journalArticlepeer-review


Four hundred and twenty-two employees completed daily diaries measuring positive affect, negative affect, work hours, and health behaviors (snacking, smoking, exercise, alcohol, caffeine consumption) on work days over a 4-week period. In addition, measures of job demands, job control, and social support (iso-strain variables) were completed on 1 occasion. Multilevel random coefficient modeling was used to examine relationships between the job characteristics, daily work variables, and self-reported health behaviors. Results indicated a more important role for within-person daily fluctuations than for between-persons variations in predicting health behaviors. Whereas negative affect was negatively related to health behavior for both men and women, work hours had negative impacts for women only. Iso-strain variables showed few main effects and a modest number of interactions with daily variables (mainly for men). Findings point to the limited impact of stable features of work design compared to the effects of daily work stressors on health behaviors.

Original languageEnglish
Pages (from-to)1731-40
Number of pages10
JournalJournal of Applied Psychology
Issue number6
Publication statusPublished - Nov 2007


  • Adult
  • Affect
  • Female
  • Health Behavior
  • Humans
  • Male
  • Middle Aged
  • Models, Psychological
  • Stress, Psychological
  • Surveys and Questionnaires
  • Time Factors
  • Workplace
  • Journal Article


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