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The negative consequences of job insecurity on the well-being of individuals are well known. However, the perceptions of job insecurity over time and how some factors such as social support may affect them have received limited attention. This study follows precarious schoolteachers for three weeks before the end of their contract to explore how their perceptions of job insecurity evolve over time.

The participants were 47 precarious schoolteachers who first completed a general questionnaire, then a diary survey on nine occasions over the course of the three weeks. Data was analysed with MPLUS 7.3.

The results suggest intra-individual differences regarding the way job insecurity was perceived over time. An additional discovery was that support provided by the school principal was negatively related to changes in job insecurity over time.

The relatively small sample size, which includes only precarious schoolteachers, and the methodology complexity of the diary are limitations of this study.

This study highlights the subjective nature of the perceptions of job insecurity. It also shows the importance of the school principal's social support towards precarious schoolteachers; therefore, practitioners should propose interventions to enhance the quality of principal–teachers relationships.

This study contributes to the literature by investigating how perceptions of job insecurity evolve over time and the role of social support.

Different studies underline that perceived job insecurity (PJI) has negative consequences at both individual and organisational level. Some authors investigated PJI in temporary agency workers (TAWs) but these studies did not focus on specific countries and did not discuss the relationship with job exhaustion. Other researchers explored gender differences in PJI and found different results; some investigated differences in PJI perception and others its relationship with the outcome of stress or well-being. The purpose of this paper is to inquire about the effects of PJI (as a demanding condition) on job exhaustion, considering the mediation role of workload and exploring differences between male and female TAWs.

This research involved 474 Portuguese TAWs (209 men, 265 women). Data were collected through a self-report questionnaire; data analyses were performed using IBM Spss Statistics 22 for descriptive statistics, correlations and t-test; Mplus7 was used to estimate a multi-group structural equation model and to test the mediation.

The results confirmed that workload is a mediator and indicated gender differences in how PJI relates to workload and job exhaustion in TAWs. In fact, the mediation of workload in the relationship between PJI and job exhaustion was partial in men and total in women: in the women group the direct effect of PJI on job exhaustion is not significant, and the indirect effect mediated by workload is significant; in the men group both direct and indirect effects are significant.

This paper contributes to extend the research on job insecurity of TAWs in a specific national context and highlights gender differences in the relationship between PJI and job exhaustion.

Temporary agency workers (TAWs) have a double employment relationship: one with the agency that hires them with a formal contract, either temporary or permanent; and another with the client organization where they actually perform their work. As the social-exchange theory assumes that TAWs respond to the support they receive from both organizations with affective commitment toward the respective organization. The purpose of this paper is to propose that the type of contract with the agency moderates these relationships, specifically that permanent TAWs present a stronger relationship between perceived organizational support (POS) and affective organizational commitment (AOC) toward the agency and, to the contrary, that temporary TAWs show a greater relationship between POS and AOC toward the client.

The hypotheses were tested with a sample of 522 Portuguese TAWs, of which 265 were temporaries and 257 were permanents. Data were collected with a self-report questionnaire and analyzed with multigroup analysis using the AMOS program.

The authors verified that POS from both the employment agency and the client organization were related to the TAWs’ affective commitment to each respective organization. Furthermore, the relationship between POS from the employment agency and the affective commitment to this organization was stronger in permanent than in temporary TAWs. However, contrary to the expectations, the contract with the agency did not moderate the relationship with client organizations: temporary and permanent TAWs showed a similar relationship between POS from this organization and their affective commitment toward it.

These findings show the important organizational role of both the employment agency and the client in supporting their TAWs and attending to the type of contract they have with the employment agency.

This paper contributes to the analysis of the TAWs’ double employment relationship and highlights the role of the agency contract in the explanation of these relationships.