The Guard has Traditional Reservist (TR) and AGR slots. AGR slots are full-time gigs just like active duty. You earn a military retirement while an AGR. I'm not going to say dudes are never hired into them off the street, but I've never heard of it. Usually guys are hired, sent through the training pipeline (commissioning, UPT, IFF/RTU, SERE, Water, etc.), then they get seasoning days (still on orders). Once the seasoning days end, you're a traditional reservist. If an AGR slot is open, they can hire you into that, but from what I understand of the guard, that's rare early on. So then you either trough (heavies) or pick up man-days some other way (school tours, etc.). You do not have a full-time job. It's on you to find a job and still fly as necessary to keep current.
The Reserves are a bit different, as there is a "baby-ART" program where you can get hired into a Federal Civil Service GS position in the squadron. Those are also fairly rare, but I think they happen more often than AGR jobs. The reserves also have AGR jobs in some units.
Most squadrons will ask you how you plan on making a living once you're done with training, as you shouldn't automatically expect to be hired into a full time job.