To advance organizational environmental sustainability, organizations need to increase “green” behaviors among their employees. A promising mechanism for this is environmental “spillover,” in which engaging in green behavior is associated with subsequent green behavior across time (i.e., temporal spillover), types of behavior (i.e., behavioral spillover), and contexts (i.e., contextual spillover). However, the specific within-person spillover effects of different green behaviors within and between work and nonwork contexts, and the individual and contextual factors influencing these potential spillover effects, are currently not well understood. Analyzing data from N = 2,348 employees in Germany across five monthly measurement waves, we explore how conserving and citizenship green behaviors spill over within and between work and nonwork contexts. Additionally, we consider individual-level (i.e., intrinsic motivation toward green behavior) and contextual moderators (i.e., green organizational climate) of these relations. Results of random intercept cross-lagged panel models supported our hypotheses regarding temporal spillover of conserving behavior in both work and nonwork settings. Regarding behavioral spillover, conserving behavior was positively related to subsequent citizenship green behavior at work when green organizational climate was high. Additionally, contextual spillover of conserving behavior from the work to the nonwork domain only occurred under a supportive green organizational climate.
