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 2 Main effects of work and specific 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)	2.882**	3.107**	1.982**	1.566**	1.004**
Workday 1	0.137**	0.354**	−0.016	−0.037	0.039
Workday 2	0.185**	0.387**	−0.020	−0.088*	0.074
WORK
Skill utilization	−0.014	−0.009	−0.011	−0.009	0.015
Decision authority	0.018	−0.000	0.015	−0.006	−0.025
Psychological demands	−0.006	−0.002	−0.018	0.001	−0.034**
Physical demands	−0.043	−0.041	−0.022	0.028	0.015
Number of hours worked	−0.002	−0.002	0.010	0.001	0.001
Work schedule (irregular)	0.046	0.033	0.076	0.049	0.239
Support from coworkers	−0.022	−0.013	−0.008	−0.031	0.002
Support from supervisors	0.006	0.014	−0.007	0.012	−0.017
Job insecurity	−0.021	−0.021	−0.034	−0.059*	−0.077*
PERSONALITY
Self-esteem	−0.016	−0.011	−0.010	0.006	−0.016
Locus of control	−0.005	0.000	0.005	−0.008	0.000
Random part and fit
σ² (companies)	0.021**	0.026**	0.022	0.018	0.026
σ² (employees)	0.107**	0.129**	0.146**	0.253**	0.354**
σ² (samples)	0.220**	0.249**	0.258**	0.316**	0.419**
χ2	12858.4**	12724.7**	12731.4**	12452.4**	12174.7**
df	33	33	33	33	33

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