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. 2009 May;4(4):108–121.

TABLE 3.

Musculoskeletal disorders as a longer-term consequence of workplace flexibility and worker insecurity (bivariate regressions and hierarchical OLS regressions)

Variables Bivariate regression coefficients Regression with control & independent variables Full model with stress included
B (SE) B (SE)
Constant 5.325 (2.244)* −5.38 (2.228)
Independent variable: Objective flexibility
Permanent contract −0.319 (0.698)
Lost job when employer lost contract 4.053 (3.187)
Full-time hours (ref) 0.752 (0.691)
Part-time hours −0.888 (0.772)
Casual hours −1.106 (1.382)
Involuntary hours 1.040 (0.563)
Work on call −0.584 (0.249)* −0.299 (0.265) −0.289 (0.245)
Work split shifts −0.086 (0.643)
Salaried −0.251 (0.559)
Paid per visit 2.542 (3.193)
Hourly pay with variable hours 0.113 (0.566)
Subjective (perceived) insecurity
Employment insecurity 0.093 (0.045) 0.098 (0.047) 0.025 (0.045)
Labour market insecurity 0.798 (0.259)** 0.632 (0.250)* 0.586 (0.231)*
Control variables
Heavy workload 0.149 (0.046)** 0.100 (0.047)* 0.016 (0.045)
Job is repetitious 0.912 (0.237)*** 0.673 (0.230)** 0.769 (0.213)***
Organizational support −0.085 (0.031)** 0.025 (0.034) 0.073 (0.032)*
Peer support 0.092 (0.095)
Work injuries in past year 4.24 (0.967)*** 3.186 (0.942)** 2.213 (0.881)*
Age 0.037 (0.028)
Job title: Manager, supervisor, coordinator −1.917 (0.530)*** −1.301 (0.633)* −1.239 (0.585)*
Job title: Office staff (ref) 0.474 (0.542)
Job title: Case manager 1.640 (0.569)** 0.389 (0.664) −0.165 (0.618)
Stress 0.265 (0.030)*** 0.247 (0.034)***
Adj. R2 0.155 0.279
R2 0.180 0.303
Change in R2 0.123
N 300 300 300
*

p<0.05,

**

p<0.01,

***

p<0.001

* p<0.05, ** p<0.01, *** p<0.001