Pros
I was really impressed with the onboarding process and everything that was discussed with me when I first started. They seemed genuinely interested in my future and how I could make the best impact with my team and the company. They give you a decent amount of days off, although it has recently decreased due to the merging with Mars. Benefits are pretty good also.
Cons
Things quickly changed and you could tell there were obvious differences after the Mars takeover. It seems like the more Mars influences the culture (their idea of "One Mars") the more certain job aspects that used to be pros at Wrigley are now gone. Micromanagement has become a common theme in several aspects of the workplace. They also have a set track of how they plan to advance your career (cannot change positions until after a specific period of time has passed)and they will not deter from that unless you are a favorite of your boss. It also seemed like people liked being there for 10 hours a day, and if you didn't need to be, it felt like you didn't work as hard as the rest of the team. I don't know if there was pressure from the company or if associates just really loved being at work for that long. The office is also in a horrible location. Even if you live in Chicago the only "easy" way of getting there is to drive and your neighbors are Waste Management.