An awful lot of lower level office jobs, admin, clerical, contact centre etc... are exactly the sort of roles where some boss or other will insist you absolutely can't do the job from home, must go to the office, and they won't provide you with/don't trust you with the laptops or equipment to work from home.
In my experience those on the bottom rung are slaves to the desk, those higher up get all the working from home benefits.
And it's precisely those at the bottom who are least likely to be able to drive or afford a car who will be most likely to have to use public transport.