Avantages
Stable company. Even salaried employees clock in and clock out. It is a double edged sword. Yes you have to be punctual, but put in your required 40 hours and you're fine. I've worked at startups putting in 60+ hours per week, so I'm happy to hold up my end of the bargain by promising 40 hours and no more. If you find you have a family or after work life, want to go home on time, this is a decent place to punch in, put your head down, get work done, and go home.
Inconvénients
Very conservative company. Think of IBM in the 80s. This may be a "con" to some people, but is fine by me. HR has gotten nicer over the past few years. There is not much socializing going on at work, I guess it's the company culture. The break rooms have no windows.