Boundaries and the exploration of self are conceptualized within the agency-structure problem first articulated in social theory during the 1970s. Constructing boundaries as a professional issue within the discipline has to take account the agency embedded within boundaries. Multiple boundary dilemmas are discussed within the framework of the agency-structure problem, including those that result from policies and procedures, and it is further argued that boundaries and the exploration of self also impact at the team level. Finally, the role of power imbalances within the practice of boundary formation is explored in relational worker-client interactions.