Pros
PACCAR has endless opportunities for those that are not lazy. If you are motivated you can move around and move up quickly. The company is stable, a Fortune 500, and always looking to move forward.
Cons
It is very easy to get frustrated with the culture in the company. The employees treat the Executive leaders like Gods. It is not uncommon for people to run around saying the "Chairman is coming clean your desk." As sad as it is the Chairman has nothing better to do than worry about whether someones desk is tidy or not. The dress is over the top business. Heaven forbid you take the elevator without your jacket of your suit on because the chairman might see you. It is no wonder more people don't quit with companies like Amazon and Microsoft so close that actually understand a work/life balance.