By utilizing a 2-year longitudinal design, the present study investigated the experience of work engagement and its antecedents among Finnish health care personnel (n = 409). The data were collected by questionnaires in 2003 (Time 1) and in 2005 (Time 2). The study showed that work engagement--especially vigor and dedication--was relatively frequently experienced among the participants, and its average level did not change across the follow-up period. In addition, the experience of work engagement turned out to be reasonably stable during the 2-year period. Job resources predicted work engagement better than job demands. Job control and organization-based self-esteem proved to be the best lagged predictors of the three dimensions of work engagement. However, only the positive effect of job control on dedication remained statistically significant after controlling for the baseline level of work engagement (Time 1).