Self-defeating work behavior (SDWB) is a common and costly behavior that is not adequately incorporated into management research. We argue there are two reasons for this. First, the construct has not been adequately defined for management scholars. This has hindered grounding the construct in the organizational context and created confusion about differences between SDWB and related constructs like deviant work behavior (DWB). Second, the underlying nature of SDWB is not well understood by management scientists. To stimulate management research on a costly and arguably understudied construct, we provide a definition of SDWB and use the definition to clarify relations between SDWB and DWB. We then proffer two research propositions to guide future management research based on two salient attributes of SDWB: 1) self-regulation failure, and 2) the habitual nature of SDWB. Finally, we demonstrate how investigating the two research propositions can open new territories for studying SDWB in the workplace.