Try and list the types of jobs you can do working from home. And then list the types of jobs where that is impossible.
Office jobs can be done from home
I'm a freelance reporter/writer - that can be done from home (especially given there is no live sport / events to go to cover atm)
Anything which involves the majority of work being done on a computer - from home
Job centres are all closed (I know as I've had to apply for Universal Credit) they must all have been working from home
Admin jobs etc - from home
You can't be an office receptionist and work from home
Atm, because of social distancing measures, you can't be a hairdresser and work from home but of course you could do once more restrictions are lifted
Working on-site obviously can't be done from home (but any office work can be)
Supermarket in-store working
Nurses/Doctors etc - the obvious stuff
Clerks keeping banks open
Postal workers etc
That's off the top of my head. But none of those roles scream either middle class or working class.
If someone thinks working in an office means middle class then I'm genuinely baffled.