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Despite the strong evidence on circadian rhythm disruption in shift workers and consequent increased vulnerability for infection, longitudinal association between shift work and COVID‐19 infection is unexplored. In this study, data from UK Biobank participants who were tested for COVID‐19 infection (16 March to 7 September 2020) were used to explore the link between shift work and COVID‐19 infection. Using the baseline occupational information, participants were categorised as non‐shift workers, day shift workers, mixed shift workers and night shift workers. Multivariable regression models were used to assess the association between shift work and COVID‐19 infection. Among the 18,221 participants (9.4% positive cases), 11.2% were health workers, and 16.4% were involved in shift‐work‐based jobs. Ethnic minorities (18%) and people in night‐shift‐based jobs (18.1%) had a significantly higher prevalence …