So one of the companies I worked with closed, will reopen Monday and I'll resume going there. Apparently there will be "COVID supervisors" among managers to ensure distancing & safety rules. Haven't had much details beyond surgical masks being supplied by the company and the fact it will be skeleton crews. Before closing for lockdown they also had hand sanitizers, wipes and limiting number of people per office (if 1 was not possible) put in place.
Reading stuff elsewhere it does seem it's the guidance from authorities for company offices resuming work, maybe with a couple more wrinkles (having ground marker at Xerox machines etc, mandatory masks and gloves when not in office, having a circulation path in hallways...).
Not sure this theorical plan will survive first contact with reality but
it's a more severe and restrictive regime than what was on place on the company I worked at during lockdown.
The public transport operators in Paris apparently wrote a joint letter to the Prime Minister to say they didn't have the financial and human means to implement the government demand to somehow allow for users to respect the 1m rule. It's of course wholly unrealistic if the number of travellers shoots up to normal average or slightly below, even if traffic is back to 100%. Of course the idea is to keep WFH in place as long as possible wherever possible...