From the Financial Post, another good article exploring anecdotal evidence and some preliminary data about the effects of Long Covid on workers in the U.K. and U.S.:

Policy-makers are starting to suspect the condition is a factor behind the labour shortages seen in the U.S. and U.K., where many older workers are looking to work fewer hours or have left the workforce completely. One study by the Brookings Institution in January speculated that long COVID could potentially account for upwards of 15 per cent of the 10.6 million unfilled jobs in the U.S.