More than just a place to sleep; a place to call your own. And every place I’ve rented did not feel like my own; most corporate rental contracts make it very clear that this is their property, don’t you dare make it feel like home, you only get to temporarily reside there by the grace of their good will (and by paying out your nose, ears, eyes, and ass for the privilege).
They can be both because the jobs they work pay too little to live on, so they need welfare to survive.
Of course that’s true for most jobs that non-immigrants work too, but a few cents more and you’re suddenly not eligible for grocery money.