From my experience so far with pandemic WFH that turned into permanent WFH for our company, if the employee was generally good or performed pretty well they are performing even better working remotely. However, if the employee was just average or needed some oversight, productivity is not very good remotely. Fortunately, I have a solid team (at least for now) so I'm seeing the benefits and things are going very well overall. However, a colleague's team's overall productivity is abysmal. Btw, we also don't have long hours. Rarely work over 40.