He can call and report once he moves. The rent amount will be added as a SNAP deduction, and with that income his Medicaid will be fine. He can apply for LIHeap for heating (even if heat is included he can qualify if the rent isn’t subsidized). He obviously won’t have a 1099 or anything so he can provide an income statement from the person employing him stating he is paid $1200 monthly. I work for DHS and we 100% don’t care if he is paid cash or reports it to the IRS, that’s separate from our office, we just need to know the income to calculate the benefits.