Pros
The people you work with are nice and usually intelligent. They will train you on things you know nothing about and the company is prestigious and will look good on your resume. Most are happy to help, which is in large part why Mercer is known for customer service. You will learn a lot by working here at the very least and gain a lot of transferable skills. There is a lot of opportunity for overtime, and the permanent benefits are nice if they don't drag you out for a year as a temp like some. There is a good amount of promoting from within, but...it's usually like the private in the army being promoted to captain when his whole squad gets killed.
Cons
It's a call center, so if you don't know what that means, make sure you research before you accept the job here. The generally feeling is half will quit and the other half will be asked to leave, and the remaining couple of people will maybe last a year or two. Of a 20 person team there are about 3 left after 5-6 months. Even the supervisors get sick of the atmosphere. You might get lucky and get a low volume gate with super nice people calling, or you'll take 100 calls a day of nightmares. Speaking of those, you will start to have them every time you fall asleep. I am glad I worked there, but its a sign that something's wrong when you legit hope you get in an accident on your way to work everyday. The biggest issue for the qualified employees is you just have to be lucky to get promoted. It really is right place, right time at Mercer; hard, quality work will see you continue to take calls while your inexperienced co-worker who gets 5 calls a day gets promoted because he was sitting near a manager who needed an analyst. Some management is good, and the others are good at deterring you from asking questions and IMing you about limiting your wrap and idle time. If you don't like fighting with a bureaucracy whenever you try to innovate or take the initiative, don't work here. If you enjoy taking calls from people whose insurance gets inexplicably dropped at least 3 times a year (or 3 times in a month), this is the place for you. The reason I left was because Mercer takes good employees and ruins them. I saw quite a few quality workers develop unprofessional habits just during my several months there. Some honestly hope and even try to get fired. Most won't fully realize how bad it is since for many reps it is their first 'real' job, but this can be a plus once you start your second because you will never have stress like this again.