Pros
Client company treats my group pretty well; Kelly pays us and handles PTO. They mostly stay out of my business because they have no clue about what I'm doing for a living (or to increase their $). My pay is pretty good, mostly because I have contested their idea of what "market value" is, on a job category that cannot be put in a box. I have held this position for 10 years...really should be an in-house position. Our health insurance is expensive, but pretty good overall. (This is with the Engineering Resources group...Administration, e.g. O.P.'s and the like, have no insurance other than Obama Care.)
Cons
No matter what one does to further Kelly's profit margin, it is not recognized. There are no incentives such as merit bonuses, or longivity bonuses, or any kind of promotions. Your ONLY "promotion" is the pay increase that you might get. So, if one is faced with the prospect of working for them because they are the only game in town, get ALL the $ you can possibly negotiate, because you WILL lose money over time.
