Sufferers of long-term COVID-19 symptoms are feeling negative impacts in their work life and mental health. The World Health Organization estimates that 1 in 10 people who get COVID-19 could suffer long term symptoms. Data from a UK government report uncovered that 44% of people who reported long-term symptoms felt that it affected their ability to do their job. 25% of them also say they feel like they have no one to talk to about their condition.
See "Long-term COVID-19 symptoms pose a working issue", Stephen Jones, Business Insider, July 23, 2021