I'm trying to find a reserve guy or gal but they have not been around as of late. How many days can one work? I know we had a reserved pilot back at VAW-120 who worked at least 10+ days a month. Someone said one day of drill is equal to two days of pay, or something to that effect. I think for an O-4 with my time is, it's $805 per drill period.
The answer is that it really depends on the unit - life (and subsequent $$) in a flying or "hardware" unit is much better than in a more traditional reserve unit.
There are a number of different pots of money you can tap when you drill. The most basic are "drills", which come in half day increments - 4 drills equals a full weekend. A drill is essentially a full active duty day's pay, so you are getting a 2-fer. You have a god-given right to 48 drills per year.
Since if you are flying you need to be spending a lot more than just 24 days a year "doing stuff", there are additional pots of money - the primary one is known as AFTPs, "Additional Flight Training Periods". These are meant to be used when you are flying during the week; they are not a 2-fer, but a one-for one pay. You are allocated a certain number of these per year; I think we (in the VAQ world) get 48, but this is also heavily dependent on the current fiscal situation. Times are tough, and the Reserves are getting hit hard for $ to pay for the war, and AFTPs are being cut significantly.
Lastly, there are RMPs - Readinesse Management Periods. These are supposed to be used to cover admin and training requirements (G-lectures, misc paperwork, etc.) You also get a certain number of these, but as with AFTPs they can be variable.
So the big picture is you can make some serious bucks as a Reservist in a flying billet, subject to a few constraints. We've had several folks over the years who had no real jobs other than being a Reservist - by stringing together drills, AFTPs, RMPs, and other active duty periods (ATs - annual training; ADT - active duty for training; and ADSW - active duty for special work), you can clear quite a chunk of change.