There are a plethora of empirical pieces about employees' pro-environmental behaviors. However, the extant lit-erature has either ignored or not fully examined various factors (e.g., negative or positive non-green workplace factors) that might affect employees' pro-environmental behaviors. Realizing these voids, the present paper proposes and tests a serial mediation model that examines the interrelationships of job insecurity, emotional exhaustion, met expectations, and proactive pro-environmental behavior. We used data gathered from hotel cus-tomer-contact employees with a time lag of one week and their direct supervisors in China. After presenting support for the psychometric properties of the measures via confirmatory analysis in LISREL 8.30, the abovemen-tioned linkages were gauged using the PROCESS plug-in for statistical package for social sciences. The findings delineated support for the hypothesized associations. Specifically, emotional exhaustion and met expectations partly mediated the effect of job insecurity on proactive pro-environmental behavior. More importantly, emo-tional exhaustion and met expectations serially mediated the influence of job insecurity on proactive pro -envir-onmental behavior. These findings have important theoretical implications as well as significant implications for diminishing job insecurity, managing emotional exhaustion, increasing met expectations, and enhancing eco-friendly behaviors.