Long COVID and the Challenge of Long-Term Employment: An Ecological, Sequential Explanatory Mixed-Methods Approach

Abstract Purpose To identify and contextualize the determinants of long-term employment, health, and financial outcomes among individuals affected by Long COVID. Methods Sequential explanatory mixed-methods study design guided by the social–ecological model. Adults with Long COVID who were employed before infection and returned to work during the three-year follow-up were recruited through in-person and virtual outpatient venues: ResearchMatch, a Long COVID clinic, and a peer support group affiliated with a medical center. Participants completed validated surveys assessing factors influencing sustained employment. Stratified semi-structured interviews were then conducted to explore how these factors shaped sustained employment. Quantitative data were analyzed using descriptive and inferential statistical methods, while qualitative data were analyzed through content analysis. Results Among 79 participants who returned to work, 58% ( n = 46) remained employed after a mean follow-up of 1,077 days. Those still employed reported reduced capacity and persistent uncertainty. Those no longer employed experienced worse physical health ( p < 0.002), greater comorbidity burden ( p = 0.01), more environmental barriers ( p = 0.02), and increased financial hardship ( p = 0.03). Qualitative analyses identified nonlinear return-to-work trajectories shaped by fluctuating and often invisible symptoms, alongside multilevel themes influencing employment sustainability, including misalignment between functional capacity and job demands, challenges obtaining workplace accommodations, stigma, limited policies, and labor market barriers. Conclusions Employment sustainability among individuals with Long COVID is shaped by complex, multilevel barriers, with job loss further worsening health and financial hardship. Investment in comprehensive Long COVID care, including multidisciplinary clinical services, vocational rehabilitation, clinician education, public awareness initiatives, employer training, and policy reform, is critical to support long-term recovery and employment sustainability.