McDonald's joins companies like Coca Cola and Amazon in delaying their return to office and requiring workers to be vaccinated against COVID-19. In a recent town hall McDonald says they heard from employees that returning to the office would be more comfortable if they knew their colleagues were vaccinated. McDonald's will be pushing back their reopening date from September 7th to October 11th and asking all workers to be fully vaccinated by September 27th. However, these rules only apply to McDonald's office employees and not restaurant level workers.
See "McDonald’s will delay their return to office date for corporate employees", Amelia Lucas, CNBC, August 12, 2021