I've verified nothing here so don't take it as fact.
Phil could work for up to 9 months making "unlimited" money before the state will take his SSDI away. This is a trial period they encourage the disabled to do to test out working in the job market without fear of being cut completely.
We never heard anything about his disability review so it's possible one of the conditions was he do something with a work to hire program since they're going to cut him. I think that's unlikely though. There's also literally no way any company would hire a transient with 0 credit, defaulted bills, 6+ years of no work history, and covered in offensive children's scribbles. He couldn't even pass an interview without bouncing and squeaking.
Gretas TAP program is just a money laundering venture without a building, they're just handing out money to people they feel worthy And pocketing the rest. The most likely thing is he either found some place like the commie bookstore in Oakland to "volunteer" at, his apartment complex is making him do his mandatory work, or he's just taking pictures at the skating rink.