Vacation and sick time are great. They're really flexible with time off. Retirement is great.
I am the contractor of NIH and I didn't get any benefit package like full-time NIH employee.
They have very good benefits
Full health and vision insurance. No dental insurance
Government benefits are good and bad - good because they're cheaper (huge employee base) and bad because they have to pass Congress to become a reality. And Congress is super-cheap.
vacation can be discussed with your PI, no problem in my case but depends on your PI. Health issuance is pretty good, though not for the dental issuance.
Postdoc health insurance is good, but out of network processing takes 3 months.
working for the NIH gives you a healthcare package and limited days off, there could be more vacation days and more bonuses
Great place to work in the gov
Health insurance coverage is ok
List based on reports from current and former employees. It may not be complete.