What are active procrastinators like? Past research examining the Big Five personality predictors of active procrastination (AP) has found Extraversion and Emotional Stability to be predictive of such a behavioral characteristic. Yet, previous studies suffered from the fact that data were solely collected from undergraduates in academic settings using self-reports of personality. Attempting to extend the personality-AP associations among college students to working adults as well as to expand our knowledge on the personality profiles of active procrastinators according to both self- and other reports, the present study investigated the predictive effects of N = 173 full-time employees’ Big Five personality traits on their AP behaviors in the workplace via self- and supervisor-rated personality. Results revealed that Extraversion and Emotional Stability predicted AP across both rating sources and that in the supervisor-rating results only, the trait Agreeableness emerged as another (negative) predictor of AP. In light of recent developments with multimethod studies in the field of personality research, we discussed possible reasons for the current findings together with the study implications for research and practice related to AP at work.