A nonrecursive model with relationships between perceived lack of social support, perceived self-efficacy in eliciting support at the workplace, and the 3 successive burnout dimensions–emotional exhaustion, depersonalization, and personal accomplishment–was tested in a sample of 277 secondary-school teachers in The Netherlands. Results showed that teachers' perceived lack of support from colleagues and principals had a significant effect on their self-efficacy beliefs in eliciting support from them, while these self-efficacy beliefs were shown to predict their level of burnout. The hypothesized feedback loop was also confirmed: Teachers' level of burnout predicted the extent to which they feel lack of support. An additional effect of the personal-accomplishment dimension of burnout on perceived self-efficacy was suggested. It was concluded that perceived self-efficacy in eliciting support at the workplace is a usable construct in the prediction of teacher burnout. Future directions in research are suggested.