Well it actually depends.
Does it make the code more readable? Like you have several if statements using the same things (and/or else if)? Yeah then it's probably good.
If you have an if (work.lengt() == 0 && stacked_work.length() == 0) and that's it, probably not. Depending of whats happining then of course.
Be creative guys! But also dont be too creative :-) Think about the poor coder doing something with all that in a year or two, let's make his life less miserable (It's probably you, too).