I can't get no job satisfaction: Meta‐analysis comparing permanent and contingent workers
这项元分析综合72项研究（总样本量237,856人），发现临时工的工作满意度略低于永久员工，但差异很小；不同类型临时工（如中介工与合同工）的满意度不同。
Summary Scholars are concerned that contingent workers experience more adverse psychological job outcomes than permanent employees, but the empirical work on job satisfaction is mixed. The purpose of this study was to quantitatively summarize the potential mean differences in job satisfaction between contingent workers and permanent employees. Meta‐analytic results from 72 primary studies ( N = 237 856) suggest that compared with permanent employees, contingent workers experience lower job satisfaction ( d = −0.21); but when outlying primary studies are removed, the mean difference is small but significant ( d = −0.06). Methodological artifacts explain small but significant differences in job satisfaction but do not account for much variance. Moderator analyses support previous findings that contingent workers are not a homogeneous group; some contingent workers (e.g., agency workers) experience lower job satisfaction than permanent employees, whereas the job satisfaction of other contingent workers (e.g., contractors) is similar to permanent employees. The findings have implications for increasing our understanding of job satisfaction by showing that job satisfaction appears to vary by employment type. Practical implications suggest that extending human resource practices to contingent workers may increase their job satisfaction, which has been shown to influence job performance, citizenship behaviors, and turnover. Copyright © 2012 John Wiley & Sons, Ltd.