Drawing on Lewin's three-stage change theory (i.e. unfreezing, changing, and refreezing), this study explored social workers' experience with organizational changes in human service organizations during the first wave of the COVID-19 pandemic. A qualitative content analysis was conducted using secondary data from a cross-sectional survey (June–August 2020). Responses for 2447 participants (78.5%) who answered the open-ended question, "How have services, functions or operations changed in response to COVID-19?" were thematically coded. Four overarching themes were identified and discussed: ( 1 ) changes to organization capacity; ( 2 ) technology/infrastructure and workers arrangements; ( 3 ) workplace safety; and ( 4 ) impact on clients and workers.
Keywords: COVID-19; frontline workers; Lewin's change theory; organizational change; social work