Jastrzębska Spółka Węglowa has recorded fewer and fewer Covid 19 infections among its employees. In December 2021, the number of employees with active infections is smaller than the number of employees who have recovered. It posted the largest number of people with Covid-19 on 2 December when 215 employees were in isolation. The trend of having fewer than 200 active cases of infection was maintained until the middle of the month. The incidence fell markedly starting from 15 December, from 183 cases on 15 December to 53 cases at the end of the month.