Pros
It serve lunch and fruits.
Cons
It hires foreign PhD (physics) students who can't find jobs anywhere else. So CGG can ask his employees to do anything anytime, because CGG know his employees won't leave, because they are hard to get another offer. The company tried his best to produce horrible peer pressure: It offers a very low base salary, but pretty generous with bonus, if you can work overtime. So many of your colleagues will work to midnight. Do you want to follow? It fires experienced people who can't work so late, because CGG knows there are enough fresh students in the market. If you are younger than 30, you don't have kids, you can work 12 hours per day, 7 days per week, you want to die 10 years younger than others, and you can't find other jobs, go to CGG.