The present series of three independent studies examines how workaholism and work engagement combine relying on a variety of distinct methodologies: interaction effects (Study 1, n = 160), a person-centered approach (Study 2, including two samples of n = 321 and 332), and a hybrid mixture regression approach (Study 3, n = 283). This research also documents the relations between workaholism, work engagement, and work outcomes (i.e., work-family conflicts, work performance, sleeping difficulties, and burnout). Furthermore, this research investigates the role of workload (Studies 2 and 3) and perceived social support (Study 2) in the prediction of profile membership. Studies 1 and 2 showed that that the combination of high levels of work engagement with high levels of workaholism was associated with a variety of negative outcomes. In Study 3, the highest levels of sleeping difficulties and work-family conflicts were associated with the workaholic profile, followed by the engaged-workaholic profile, and finally the engaged profile. Finally, in Studies 2 and 3, workload showed strong associations with an increased likelihood of membership into the profiles characterized by higher levels of workaholism.

This research examines how the direction and intensity of employee's positive and negative affect at work combine within different profiles, and the relations between these profiles and theoreticallyrelevant predictors (psychological need satisfaction and supervisor autonomy support) and outcomes (work-family conflict, absenteeism, and turnover intentions). A total sample of 491 firefighters completed our measures initially, and 139 of those completed the same measures again four months later, allowing us to examine the stability of these affect profiles over time. Latent profile analyses and latent transition analyses revealed five identical profiles across the two measurements occasions:

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.