The moderating role of personality traits in the relationship between work and salivary cortisol: a cross-sectional study of 401 employees in 34 Canadian companies

Table 3 Main effects of work and general personality traits on cortisol concentrations (unstandardized coefficients)

	At awakening	After 30 min	2 p.m.	4 p.m.	At bedtime
Fixed part
Constant (Day off)	2.904**	3.108**	1.940**	1.574**	1.015**
Workday 1	0.136**	0.354**	−0.016	−0.038	0.040
Workday 2	0.185**	0.387**	−0.019	−0.088*	0.073
WORK
Skill utilization	−0.016	−0.013	−0.014	−0.007	0.016
Decision authority	0.015	0.003	0.023	−0.009	−0.027
Psychological demands	−0.005	0.001	−0.015	−0.000	−0.035**
Physical demands	−0.037	−0.041	−0.017	0.025	0.018
Number of hours worked	−0.003	−0.003	0.010	0.001	0.001
Work schedule (irregular)	0.050	0.024	0.072	0.040	0.231
Support from coworkers	−0.025	−0.017	−0.004	−0.026	0.000
Support from supervisors	0.007	0.013	−0.009	0.011	−0.016
Job insecurity	−0.026	−0.020	−0.040	−0.061*	−0.080*
PERSONALITY
Extraversion	0.012	0.002	0.003	0.013	0.009
Agreeableness	−0.028*	−0.015	−0.031*	−0.034	−0.019
Neuroticism	0.018	−0.010	−0.009	0.011	0.016
Conscientiousness	−0.001	0.006	−0.007	0.012	0.009
Openness	0.007	−0.000	−0.000	0.005	−0.011
Random part and fit
σ² (companies)	0.023**	0.028**	0.025**	0.021	0.026
σ² (employees)	0.106**	0.129**	0.145**	0.251**	0.357**
σ² (samples)	0.220**	0.250**	0.258**	0.316**	0.419**
χ2	12862.2**	12725.0**	12735.9**	12456.4**	12176.1**
df	36	36	36	36	36

Note A: *p ≤ 0.05 and **p ≤ 0.01
Note B: The following variables were controlled for in all models: gender, age, educational level, household income, social support outside the workplace, stressful childhood events, marital status, parental status, marital stress, parental stress, smoking, BMI, alcohol, psychotropic drugs, chronic health problems, physical activity, season, time of awakening

ISSN: 2050-7283