All Alerts & Newsletters The Vaccination Campaign in Belgium Is Slowly Getting Underway. What Does This Mean for Employers? Four Questions and Answers. Feb.25.2021 Can an employer require employees to be vaccinated against COVID-19? Can an employer require employees to present a vaccination certificate? Can an employer refuse unvaccinated employees access to the company? There is currently no legal basis in Belgium to link the performance of work to a mandatory COVID-19 vaccination. Therefore, no matter which sector they are from, employers cannot oblige employees to be vaccinated against COVID-19. Of course, as part of the company's wellness policy, an employer can encourage employees to be vaccinated (