Table 2.

Overview of workplace factors

Main factor	Factors	Measurement
Employment characteristics	Working hours	Continuous*: number of hours during a typical day
	Work schedule	Categorical*: day job, no weekends; day job with weekends; evening job; night job; shift work
	Job position	Categorical*: worker; supervisor
	Job size	Categorical*: part-time; full-time
	Income	Continuous*: gross annual household income in 100 000 NOK
Job demands and support factors	Psychological job demands	JCQ: mean score of five items
	Job control	JCQ: mean score of nine items
	Workplace social support	JCQ: mean score of eight items
	Supervisors’ leadership qualities	7LQQ: mean score of seven items
Travels and worksite factors	Job travels	Categorical*: no; yes
	Working from home	Categorical*: no; yes
	Working from holiday home	Categorical*: no; yes
Workplace drinking social norms	Drinking social norms	DNS: mean score of four items

*Self-developed measure.

DNS, Drinking Norms Scale; JCQ, Job Content Questionnaire; 7LQQ, Seven-item Leadership Qualities Questionnaire; NOK, Norwegian kroner.