The purpose of this study was to describe the development of a new intervention for jobseekers and to assess its efficacy using a naturalistic, pre-post intervention design. In contrast to existing work-based interventions, the Work Intervention Network (WIN) intervention targets multiple intersecting domains through four modules and via six group sessions: deepening and sustaining relationships; fostering social awareness and reducing self-blame; building emotional resilience and self-care; and planning, exploring, and engaging in the job search. To evaluate the intervention, we first recruited a sample of 33 jobseekers to provide feedback on the program. Integrating their feedback into the design of the program, we then recruited a sample of 108 jobseekers who filled out surveys before and after the six-session intervention, which assessed work and mental health functioning across the four domains. Results revealed that participants were highly satisfied with the intervention and reported large increases in social support, belonging, psychological well-being, job search engagement, and work hope as well as decreases in isolation and self-blame. This study provides strong support for the WIN intervention and has implications for how to support jobseekers in an increasingly precarious labor environment.