“…[6,9,11,12,15,16,18] As a result, the limited available research has proven inconclusive so far: While some literature reviews suggest the existence of similarities between RTW experiences in physical (here, musculoskeletal) and mental health conditions, [23] such as the importance of work adjustments, [4,25] qualitative studies noted differences in RTW experiences between both health conditions. For instance, with regard to early contact, Tjulin et al [26] found that supervisors and coworkers felt that the timing of the RTW should vary between physical and mental illnesses, and Hoefsmit et al [10] observed that in mental cases, supervisors and employees tended to not have early contact, compared to physical cases. The inconclusiveness of evidence leaves a significant gap in the existing literature, since understanding how the RTW process can be tailored (or might not need to be tailored) to the needs of the physically or mentally sick-listed employee may promote an earlier RTW, and in so doing create a "win-win situation" [17,26] for all parties involved.…”