Source: Maureen Minehan, Employment Alert, Vol. 37 no. 18, September 1, 2020
From the abstract:
During every presidential election, employers contend with employees who want to express support for their candidate through hats, buttons, t-shirts, and other apparel emblazoned with candidates’ names or slogans. Add in a new option for expression this year—face masks meant to protect workers and customers from COVID-19—and employers will need to decide what they are willing to permit.