The objective of the article is to present the institution of employee vaccination and its current legal status. The considerations include examining vaccinations for employees from the perspective of their mandatory or voluntary nature and their consequences for the parties of the employment relationship. Employee vaccinations are related to such issues as the employer's obligation to protect the life and health ofemployees, the outcome of an employee's refusal to undergo preventive vaccinations, and responsibility for employee vaccinations. The investigated subject is crucial in the light of the current SARS-CoV-2 coronavirus pandemic, causing the COVID-19 disease and the resulting possibility of vaccinating employees against this disease.