Long COVID Among Wisconsin Workers in the Workers' Compensation System Associations With Sociodemographics, Vaccination, and Predominant Variant Period From March 1, 2020 to July 31, 2022

Objective: This analysis aimed to determine the likelihood of developing long COVID among Wisconsin workers while adjusting for sociodemographics, COVID-19 vaccination, industry, and occupation. Methods: This retrospective analysis determined the odds ratios of developing long COVID among Wisconsin workers who were compensated for COVID-19 lost time during March 1, 2020 to July 31, 2022. Results: A total of 234 workers (11.7%) were determined to have long COVID. Factors associated with long COVID were age >= 40 years, non-White race, infection occurrence during the initial and Omicron variant dominant periods, and the absence of COVID-19 vaccination. Workers in manufacturing and public administration were more likely to develop long COVID compared with those in health care and social assistance. Conclusions: Long COVID disproportionately affects some worker groups. This calls for more worker protection and preventative care to mitigate its impact.