Delta flight attendants have cited numerous concerns with the safety of new uniforms which were introduced 2 years ago. Many flight attendants have detailed how the new uniforms have caused symptoms such as severe rashes, hives, and even hair loss. Employees at Delta have issued multiple class action cases against Delta airline. Additionally, there is an unionization effort occurring amongs employees.
See "Tensions between Delta and Flight Attendants", Kristen Leigh Painter, Minnesota Star Tribune, January 13, 2020