The author explored whether 3 workplace conditions were related to teacher mobility decisions. The modeling strategy incorporated a series of binomial and multinomial logistic models to estimate the effects of administrative support, classroom control, and behavioral climate on teachers' decisions to quit teaching or switch schools. The results indicate that 2 of the 3 workplace conditions were strongly related to the mobility decisions of 1st-year teachers, whereas experienced teachers were not strongly influenced by workplace conditions. Results also show that the workplace conditions had differential effects on movers and leavers, suggesting the importance of modeling these 2 groups separately. (Contains 3 notes and 7 tables.)