Good place for a job, but not for a career
Pros
Great benefits, decent salary, good work environment, easy hours. Most everyone in the office is good to work with.
Cons
Little or no opportunity for advancement; most promotional opportunities are filled from outside (many are not even advertised internally). No reward for individual performance; annual bonuses are company-wide based on organizational results. HR gives lips service to employee development and advancement. This is a professional membership organization, and while members are treated extremely well (as should be the case), employees are second class citizen. The objective of PMI is to promote the project management profession and its members' careers (which, again, it does well), but does not advance the careers of its employees.