Really variable experience- depending on school, department, etc.
Pros: great benefits, interesting atmosphere, generally good people
Cons: competitive, can lead to burnout, sometimes management is terrible
Generally people go out of their way to be helpful and nice around Harvard- not what I first expected. That said, there is certainly a contingent of folks who zero in on any perceived weaknesses and aren't shy about it.
Since Harvard is very decentralized; the various schools, departments, etc. can have very different ways of doing things and social cultures. Almost everyone is a tad competitive, and high expectations can often lead to burnout. HR and benefits, etc. are very proactive and helpful in these subjects though, and will help employees to work through any issues they may have. Some places are relaxed and fun, others are a grind, but many folks find balance between work and other life distractions, of which Harvard is overflowing.
There is also a wonderful array of wellness and health opportunities and the benefits offered at large are fantastic. In addition to great health care, professional development, and discounted tickets, etc. one never knows who you might meet. So many interesting things are occurring on every corner of campus at any given time, that there is an added layer of "goings on" beyond the public and private programs. I've seen Oprah, Al Gore (twice), and can now count Nobel Prize winners as friends. If you enjoy thoughtful conversation and innovative ideas, it's never far from reach here, or in Cambridge in general.