Pros
The #1 best thing about working for AMEX is their benefits. They are top of the line. (medical, dental, 401 matching, dependent care benefits, PTO/Sick time) Now depending on your role, you may feel like you are 1 of 100s of people and don't feel important (call center) or your team may be actually contributors of change. Regardless, you are paid generously for any role you are in.
Cons
Your career advancement is directly related to the politics of your workplace and your supervisor. If you want to advance, (as in any job in corporate America), you need to know how to play the inter- company politics, and be sharp in your current role at all times, to be seen as a high potential candidate. If you are a call center rep, you have to BUST YOUR BEHIND to get out of that role. ATTENDANCE IS #1 key on call center roles.