TABLE 1.

Office workers (N=300) – descriptive statistics (means, standard deviations and scale reliabilities [α])

Variable	Mean (SD) or %	Min–Max Value (Scale a)
Dependent variable: Musculoskeletal disorders	12.97 (4.50)	7–35 (0.78)
Independent variables: Objective flexibility factors:
Non-permanent contract	17%	N/A
Lost job when employer lost contract	0.7%	N/A
Full-time hours	83%	N/A
Part-time hours	13%	N/A
Casual hours	4%	N/A
Involuntary hours	30%	N/A
Work on call	1.25 (0.56)	1–5
Work split shifts	1.02 (0.18)	1–5
Salaried	68%	N/A
Paid per visit	0.7%	N/A
Hourly pay with variable hours	30%	N/A
Subjective (perceived) insecurity factors:
Employment insecurity	17.88 (5.76)	6–30 (0.90)
Labour market insecurity	2.20 (0.99)	1–5
Mediating variable: Stress	31.87 (7.66)	14–70 (0.86)
Control variables:
Heavy workload	25.13 (5.62)	7–35 (0.91)
Job is repetitious	2.71 (1.07)	1–5
Organizational support	30.65 (8.34)	9–45 (0.85)
Peer support	16.18 (2.73)	4–20 (0.84)
Work injuries in past year	7%	N/A
Age	44 (9)	N/A
Job title: Manager, supervisor, coordinator	36%	N/A
Job title: Office staff (other)	36%	N/A
Job title: Case manager	28%	N/A