This presentation explores whether recovery-related self-efficacy (RRSE), defined as the belief in one’s ability to use available time and opportunities to recover, buffers the negative impact of technology-assisted supplemental work (TASW) on recovery experiences. TASW, understood as engaging in work-related tasks via ICT outside regular hours, has consistently been linked to impaired recovery. While RRSE has been shown to promote recovery, its moderating role in the context of TASW has not yet been examined. This gap is particularly relevant given the increasing digitization of work and growing concerns about blurred boundaries between work and nonwork domains. Drawing on the Job Demands–Resources framework, we hypothesized that higher RRSE would mitigate the detrimental effects of TASW on recovery experiences. Findings from a one-week daily diary study among Czech employees (N = 197; mean age = 33.2; male = 68 %) provided partial support: RRSE moderated the negative relationship between TASW and psychological detachment from work, but this effect emerged only during weekends and did not extend to other recovery experiences.