On the basis of the psychology of working theory (PWT; Duffy, Blustein, et al., 2016), we tested a moderated mediation model with subjective social status, work volition, proactive personality, and decent work as variables. Data were collected from 225 South Korean employees (115 women, 110 men). Results indicated that work volition mediated the relation between low subjective social status and decent work. In addition, proactive personality moderated the link between low subjective social status and work volition. Further analysis revealed that the indirect effect of social status on decent work via work volition was conditional upon proactive personality; that is, the indirect effect was weaker for individuals with a higher level of proactive personality. These results provide an application of the PWTbased model in a South Korean context. Future research could include samples from marginalized populations and additional constructs (e.g., career adaptability, human need satisfaction) of PWT.