Viswesvaran, C., Sanchez, J. I., & Fisher, J. (1999). The role of social support in the process of work stress: A meta-analysis. Journal of vocational behavior, 54(2), 314-334.

After summarizing the literature on the various models for the role of social support in the process of work stress, two studies are reported. In the first study, correlations between (1) social support and workplace stressors and (2) between social support and strains as well as (3) incrementalR²s across 68 studies, when the interaction term of stressors and support was added to the regression of strain on stressors and support, were meta-analytically cumulated. Potential moderators of these relationships were weak, suggesting the presence of three general constructs of stressors, strains, and social support. In the second study, the various models for the role of social support in the process of workplace stress were tested for the general constructs identified in the first study. Results indicated that social support had a threefold effect on work stressor–strain relations. Social support reduced the strains experienced, social support mitigated perceived stressors, and social support moderated the stressor–strain relationship. Evidence for mediational and suppressor effects of social support on the process of work stress was weak. In addition, the argument that social support is mobilized when stressors are encountered was not consistent with the available empirical evidence. A similar lack of support was found for the arguments that support is mobilized when strains are encountered and that support is provided when individuals are afflicted with strains.

Viswesvaran, C., Sanchez, J. I., & Fisher, J. (1999). The role of social support in the process of work stress: A meta-analysis. Journal of vocational behavior, 54(2), 314-334.

https://doi.org/10.1006/jvbe.1998.1661