Pros
I worked with some groups with great corporate culture that "walked the talk". My managers were great, and their employees were productive and happy. Some perks supporting morale, relationship building and health are the 2% 401K match, online and professional training, the fabulous gym, onsite cafeterias, ample free parking, volunteer opportunities, 3 weeks of vacation to start, and Summer Fridays. They also provide umbrellas for walking between buildings on rainy days. They also hired good interns and offered them real opportunities.
Cons
Covidien has a reputation for its internal politics. Several departments were known to have unhappy overworked employees with managers who disregarded employees' work/life balance and health. Some are known for employee harassment and retribution and unfortunately, I witnessed some of that.