I use the Foreign Service Benefit Plan, which has served me well both at home and while posted abroad (including two medevacs), although the reimbursement process can be cumbersome for out of network costs. Time off accrues at 4 hours/pay period when first beginning but untenured officers can choose to accept overtime in comp time, which helped me to take multi-week R+Rs as brand new officer in a hardship tour. Mental health services are covered as part of basic insurance, but can be hard to access depending on where you are posted. Hard to beat a matching 5% contribution to TSP.
Wonderful health insurance options, a Flexible Spending Account Option, and up to 4% matching on your Thrift saving Plan!
Full U.S. government benefits package plus extra benefits when overseas depending on the location.
Great 401K, health coverage can get pricey
Best: free housing overseas; free education for your kids; free shipments between moves
It's not bad, all in all. However, you're limited to one income, which is unrealistic. Some benefits offered by nearly everyone else in the universe don't seem to exist. Pay doesn't keep up with inflation, if you get a raise at all.
TSP plus fixed benefit pension
Defined benefit package that includes choice of healthcare plans with significant employer contribution, life insurance, TSP with matching, reasonable salary, and retirement plan.
Benefits are great. You have healthcare, 401k, paid vacations, education loan repayment benefits, and more. One of the best benefits is flexible work schedules.
Travel and free housing when serving overseas
List based on reports from current and former employees. It may not be complete.