Good overall coverage with many benefits including generous leave time after 5-10 years. the health plan could be better, but it's an economic fact that the agency has to offer a cheaper plan.
Health New England is okay insurance, not great. The best thing about it is that ServiceNet pays the first $1000 of the deductible for you. Delta Dental is accepted everywhere, but I paid more for it here than I did at another human services agency.
Depending on your program, you may not be able to take advantage of paid leave without relief. Many times you may be coming in sick or skipping vacation because no one else can or will work for you.
Lots of paid time off.
The health insurance for full-time employees is good especially if you are a single person with no dependents--in which case you pay relatively little per month and the agency pays a large chunk of it. If you have children or a partner the cost goes up pretty quickly, and if you are below full-time it is also more expensive. Vacation, sick-time, and the 401k were all alright. The union has done a good job negotiating benefits overall.
List based on reports from current and former employees. It may not be complete.