Table 1 Characteristics of working participants HELIUS study, N = 6278

Gender, N (%),

 Male

3154 (50)

 Female

3124 (50)

Age in years, mean (SD)

43 (12)

Educational level, N (%)

 No or elementary

680 (11)

 Lower vocational or secondary

1623 (26)

 Intermediate vocational or secondary

1933 (31)

 Higher vocational or university

2019 (32)

Marital status, N (%)

 Married or living together

3335 (53)

 Never married

2091 (33)

 Divorced or widowed

818 (13)

Occupational level, N (%)

 Elementary-low

2544 (41)

 Intermediate-academic

3407 (54)

Weekly working hours, N (%)

 12–19

555 (9)

 20–32

1154 (18)

 >32

4569 (73)

Irregular working hours, N (%)

 No

4866 (79)

 Yes

1314 (21)

Ethnicity

Ethnic background, N (%)

 Dutch

1355 (22)

 African Surinamese

1290 (21)

 South-Asian Surinamese

1121 (18)

 Turkish

1090 (17)

 Ghanaian

729 (12)

 Moroccan

693 (11)

Migration generation of non-Dutch origin, N (%)

 First

3801 (77)

 Second

1122 (23)

Working conditions

Lack of recovery opportunities, N (%)

 No

4288 (70)

 Yes

1849 (30)

Perceived stress at work, N (%)

 Never-sometimes

4966 (83)

 Often-always

1009 (17)