Combining Multiple Columns Into One

I'm trying to make a payment report which prints a separate pay sheet for each employee based on what job they did. I don't want to get into too much detail here, but basically, a name is associated with each action in a setup like this:

Job1......Job2......Job3......Job4......Job5
Joe.......Bob.......Jim.......Fred......Jeff
Joe.......Joe.......Jeff......Jim.......Jeff
Bob.......Bob.......Jeff......Bob.......Jim

and so on and so forth.

I want to have a query that gives one column that looks like this:

Bob
Fred
Jeff
Jim
Joe

I already know how to sort and group by, but how would I write a query that contains one column, then another column when that one ends, then another, et cetera?

(I need to know this, because it would be a lot cleaner to show one report for all 5 jobs than a report for each job separately, and of course, that's how the boss wants it!)