Great 401K, Ample Paid Time Off along with other benefits such as AO (Time off without Pay) which every other contractor I've worked for did not have.
The benefit/health package was standard. It was not horrible or great.
The company has very fascinating projects and you will never be bored but they have a very tight budget so consequently they expect you to wear multiple hats without being fairly compensated. The salary and benefits are not very good. Sick and Vacation days are not separated. There are no bonuses and their yearly salary increase is 1-2%.
As with all things KRS, everything is the bare minimum. Don't expect to get any more than about average benefits. One good thing is that the 401k currently matches up to 5%.
List based on reports from current and former employees. It may not be complete.