Purpose To explore if and how a dialogue-based workplace intervention with a convergence dialogue meeting can support a return to work process from the managers' perspective. Methods Individual interviews were conducted with 16 managers (10 women and 6 men) who had an employee on sick leave because of stress-induced exhaustion disorder. The manager and employee participated in a dialogue-based workplace intervention with a convergence dialogue meeting that was guided by a healthcare rehabilitation coordinator. The intervention aimed to facilitate dialogue and find concrete solutions to enable return to work. The interviews were analyzed by the Grounded Theory method. Results A theoretical model was developed with the core category enhancing managerial capacity to act in a complex return to work process, where the managers strengthened their agential capacity in three levels (categories). These levels were building competence, making adjustments, and sharing responsibility with the employee. The managers also learned to navigate in multiple systems and by balancing demands, control and support for the employee and themselves. An added value was that the managers began to take preventive measures with other employees. When sick leave was caused only by personal or social issues (not work), workplace actions or interventions were difficult to find. Conclusions From the managers' perspective, dialogue-based workplace interventions with a convergence dialogue meeting and support from a rehabilitation coordinator can strengthen managerial competence and capacity to act in a complex return to work process.