The last resort: Workplace bullying and the consequences of changing jobs

Bidirectional associations between workplace bullying and sickness absence due to common mental disorders - a propensity-score matched cohort study

BACKGROUND

The link between workplace bullying and poor mental health is well-known. However, little is known about the prospective and potentially reciprocal association between workplace bullying and mental health-related sickness absence. This 2-year prospective study examined bidirectional associations between exposure to workplace bullying and sickness absence due to common mental disorders (SA-CMD) while controlling for confounding factors from both work and private life.

METHODS

The study was based on propensity score-matched samples (N = 3216 and N = 552) from the Swedish Longitudinal Occupational Survey of Health, using surveys from years 2012, 2014 and 2016. Self-reported exposure to workplace bullying was linked to registry-based information regarding medically certified SA-CMD (≥ 14 consecutive days). The associations were examined by means of Cox proportional hazards regression and via conditional logistic regression analysis. Hazard ratios and odds ratios with 95% confidence intervals were estimated.

RESULTS

Exposure to workplace bullying was associated with an increased risk of incident SA-CMD (HR: 1.3, 95% CI: 1.0-1.8), after accounting for the influence of job demands, decision authority, previous SA-CMD, as well as other sociodemographic covariates. However, we found no statistically significant association between SA-CMD and subsequent workplace bullying (OR 1.2, 95% CI 0.7-1.9).

CONCLUSIONS

The results support an association between self-reported workplace bullying and SA-CMD, independent of other sociodemographic factors and workplace stressors. Preventing workplace bullying could alleviate a share of the individual and societal burden caused by SA globally.

Last in, first out? Length of service as a moderator of the relationship between exposure to bullying behaviors and work-related outcomes

In the present study, we proposed and tested a conceptual model of length of service in the organization as a moderator of the relationship between exposure to workplace bullying behaviors and turnover intention, as mediated through job dissatisfaction. Specifically, based on the conservation of resources theory and organizational socialization research, we hypothesized that bullying exposure would be more detrimental to employees relatively new to the organization, and less so to those with a long length of service. We employed a probability sample from the Norwegian workforce (N = 1003), with data collected at two time-points separated by six months. In line with previous research, we found that exposure to workplace bullying behaviors predicts increased levels of stability-adjusted turnover intentions, and, that job dissatisfaction mediates this association. Moreover, the mediation effect was dependent on length of service, such that it only was present at average (50th percentile; 8.5 years) and short employment length (16th percentile; 2.5 years), and was significantly stronger for the latter group. Additionally, a Johnson-Neyman test of significance regions revealed that the moderation effect became non-significant at the 69th percentile (14.6 years of length of service) in the present sample. This indicates that while short length of service represents a risk condition for work-related outcomes of bullying exposure, long length of service may represent a resource relating to individual resilience that accumulates over long time-spans.