Workplace bullying refers to prolonged exposure to frequent hostile behaviors at work, which can lead to severe stress reactions. Research in this area has not revealed a clear picture on how bullying escalates in organizations. Drawing on recent developments in work stress theory, this study tested a comprehensive model of bullying in which work environmental and personality factors were hypothesized to act as antecedents of bullying and post-traumatic stress symptoms as an outcome. Structural equation modeling on data provided by 609 public sector employees in Italy showed that job demands (workload and role conflict) and job resources (decision authority, co-worker support and salary/promotion prospects) were related to bullying over and above neuroticism, and that bullying mediated the relationship between job demands and PTSD symptoms. Evidence also emerged for a buffering effect of job resources on the job demands–bullying relationship. Overall results are compatible with a view of bullying as a strain phenomenon, initiated by both work environmental and personality factors.

The Job Demands–Resources (JD-R) model postulates that job demands and job resources constitute two processes: the health impairment process, leading to negative outcomes, and the motivational process, leading to positive outcomes. In the current research we extended the JD-R model by including both counterproductive work behaviour (CWB) as a behavioural stress-reaction and job-related affect as a mediator in both processes. In a sample of 818 public-sector employees we found support for a model where job demands (workload, role conflict, and interpersonal demands) were associated with abuse/hostility CWB, whereas job resources (decision authority, social support, and promotion prospects) were associated with work engagement. Furthermore, job-related negative affect mediated the relationship between job demands and abuse/hostility CWB, whereas job-related positive affect mediated the relationship between job resources and work engagement. We also found that the impact of job demands on negative affect was attenuated by job resources.

Although it has been suggested that a poor work environment can be related to the incidence of bullying, little work with robust research designs has been conducted on the matter. By drawing on the concept of hindrance stressors and using a longitudinal research design, we investigated whether role conflict and role ambiguity predicted being a victim of bullying twelve months later, over and above personal vulnerability factors. With a parallel analysis we also investigated whether the same role stressors predicted the enactment of bullying. The sample consisted of 234 employees of a National Health Service agency in Italy, including medical, nursing and administrative staff. The results indicated that role conflict positively affected both being bullied and bullying enactment, with personal vulnerability (reporting a doctor's diagnosis of depression at baseline) affecting only the first of the two outcomes. However, some evidence also emerged of reciprocal relationships between role stressors and bullying. Directions for future research on the relations between working conditions and bullying are discussed.

By drawing on effort-recovery theory, we conducted two studies to explore the short-term process through which workaholism may affect health and to assess the implications of such a process for job performance. In Study 1 we hypothesised that workaholic tendencies would affect daily workload and that daily workload would mediate the relationship between workaholic tendencies and daily emotional exhaustion. Data were provided by 102 workers consisting mostly of entrepreneurs, managers and self-employed individuals, who were followed for ten consecutive working days. Multilevel structural equation modelling, controlling for the general level of workload, neuroticism and conscientiousness, supported the hypotheses. Building on the results of Study 1, in Study 2 we hypothesised that workaholism would lead in the long run to a decline in job performance. Study 2 considered 519 employees of a large organisation and focused on their supervisors’ performance ratings in two successive years. Workaholism was used to predict change in work performance. Work engagement was included in the model as a concurrent predictor of work performance. Contrary to what was hypothesised, workaholism did not affect performance; only work engagement did so, and in a positive way. The implications of the obtained results for further research on workaholism are discussed.

We conducted two studies on workaholism to address three identified gaps in the literature, namely, the job-related affective experiences of workaholics, the relationship between workaholism and job demands, and the long-term mental health effects of workaholism. We also examined gender as a moderator of the relationship between workaholism and its outcomes. In Study 1 (N = 311), focused on a heterogeneous sample of workers, we found that workaholism was positively related to the experience of observer-reported, as well as self-reported, job-related negative affect and that this relationship was stronger among female workers. Furthermore, in a subsample of participants (n = 189) for whom we had available blood pressure data, we found that workaholism was positively related to systolic blood pressure. In Study 2 (N = 235), based on a sample of health-sector employees in which we adopted a full, two-wave panel design including workaholism, job demands, and mental distress, we found that the baseline levels of job demands impacted the follow-up levels of workaholism, while the reverse was not the case. We also found that the baseline levels of workaholism positively affected the levels of mental distress reported after 1 year. These results add to the existing literature on the job-related affective correlates and psychophysical costs of workaholism and shed further light on work environmental factors that may contribute to its genesis.

The current study aimed to test how workload, via workaholism, impacts job performance along with the complex interplay of perfectionistic concerns and work engagement in this mediated relationship. A two-wave, first and second stage dual-moderated mediation model was tested in an SEM framework. Results based on a sample of 208 workers revealed a complex and nuanced relationship among the studied constructs, such that the simple mediation model was not significant, but the indirect effect was negative, nonsignificant, or positive conditional on both moderators. The results offer interesting theoretical and practical implications for future studies to be conducted in this area of research. In particular, lower levels of perfectionistic concerns were associated with a positive relationship between workload and workaholism, and lower levels of work engagement were related to a negative link between workaholism and job performance. Findings suggest work engagement should be monitored and promoted by managers, especially when workload, and consequently, the possible risk of workaholism, cannot be avoided.