[marcellus23]

> The employees now have a proof ("my work output hasn't decreased during covid") and want to renegotiate their contracts.

Are you sure? Plenty of companies have experienced lots of issues with communication and velocity during covid. I don't think you can declare, in general, that WFH was not a blow to productivity. Granted, I don't think you can declare that it _was_, but it certainly seems dependent on the type of person and the type of company. Your experience is not everyone's.