This study applies a social identity lens to show that, during the COVID-19 pandemic, the Dutch government’s classification of occupations and labor market sectors as essential versus non-essential imposed a professional identity threat to those categorized as non-essential. Specifically, we hypothesized (1) that non-essential workers in the Netherlands would report lower professional identification (PI) during the pandemic relative to essential workers; (2) that non-essential workers’ mandatory shift to working from home and working fewer hours would (partially) explain their lower PI relative to essential workers; (3) that gender differences would emerge in the impact of categorization as (non-)essential worker on PI levels; and (4) that lower PI would negatively relate to work productivity and performance during the pandemic. Empirical evidence based on three cross-sectional datasets sampled among the Dutch working population during two peak waves of COVID-19 infections and national lockdowns (May/June 2020; Study 1: N = 371; November/December 2020, Study 2: N = 467; Study 3 = 735) all confirmed that non-essential workers reported lower PI relative to essential workers. The explanation for this outcome varied at different stages in the pandemic. Study 1 results showed that lower PI among those declared non-essential was partially explained by non-essential workers’ work location (home-bound) and reduced work hours, but only during the 1st peak wave. As the pandemic continued (2nd peak wave; Study 2 and 3), gender differences emerged, with more negative consequences of being classified non-essential for women than men. Non-essential workers’ lower PI levels were also associated with lower work productivity and performance. These findings underscore the importance of understanding social identity processes during the pandemic. We discuss socio-psychological ramifications of government regulations to control health crises, given how these may inadvertently undermine the professional identity of over half a working population in society
