Pros
Gee, um...looks good on paper, other people think you have a great job, the pay and benefits package is pretty good at first (for the first three years or so and then they think they have you). You will have ups and downs, one day you might be on top of the world - the next you might want to throw yourself of a bridge - that's from the full throttle pace of company life and stress. They are leaders in the industry. You will become an expert at using the dark forces of negotiating and posturing to twist others to your will. Sometimes you will be realy proud of who you work for. Great history.
Cons
Now I say all this as a successful employee who went up through the ranks very rapidly and I quit because I wanted to get my PE and since Kiewit outsources design work you will not get your PE with Kiewit unless you work for Kiewit Engineering in Kansas. That and I could imagine the next twenty years living like I did with them. So I am not saying this because I was fired or driven out, but I think a young person going into this company should know what they are getting into. Oh my god. The hours you work are crazy - anywhere from 60 to 80+ hours a week depending on how sneaky you are. Culture of fear, paranoia, and might as well become an alcoholic now. They move you around without warning, very secretive. Total conformist hell, they say they want the best and brightest but they really want drones (resistance is futile). Ethics is negotiable. No life unless you hook up with another Kiewit employee. Very political, have to know who to suck up to and how seem like the most loyal of the company man or you will be left to languish in mediocrity. It is the epitome of corporate hell. Spend half your time filling out forms, covering your ass, and deferring blame on other employees or outside organizations just to survive. Soon you turn into the abusive boss you hated when you first arrived. Incredibly high turnover, the company figures it is a matter of survival of the fittest and could care less about your personal needs. The smart ones get in; get their experience and the credentials of having worked for this much admired company and get out. The stupid ones stay in, and have a crapy life for about twenty or thirty years, get rich and die of a heart attack alone surrounded by expensive junk having lost your family at some point earlier in your career. Otherwise being at Kiewit is more than just a job it is a total way of life - that's what they mean by "Kiewit People". It's tolerable and you will get rich but it is not a mentally or physically healthy work environment.