Open AccessThis study investigates the extent to which job satisfaction mediates the relationship between job stress work outcomes, such as intention to leave the employer and citizenship behaviour (OCB). To reach this objective, data were collected from two independent samples (engineers, N = 138; truck drivers, N = 294). The procedure advocated by Baron and Kenny (1986) was selected for the mediation test. The result pattern across both samples was very similar. While no relationship was found between stressful work and OCB, perceived stressful work increased the desire to leave the employer. Job satisfaction had a positive effect on OCB and a strong negative effect on intention to leave. In both samples, job satisfaction fully mediated the relationship between perceived stressful work and intention to leave the employer.