Pros
Paccar is and will continue to be a stable company. If you are young in your career, it wouldn't be a bad place to get some good work experience. Work life balance for NON-managers is relatively good. The benefits are good. The senior management is good. My department manager was excellent. He was a good strategic thinker with vision for the department. He was a good person to be around.
Cons
The pay is far below what you could get for the same job somewhere else. The volume of work they expected was completely unreasonable. I typically worked at least 50 hours a week, and usually more. The amount of vacation is not negotiable, and really stunk when compared with the amount of work I had to get done. Delegating to my exempt employees was hampered by immense turn-over and an extended period of time where I wasn't allowed to fill open positions. The dress code is ridiculous. Your desk is not your own. It needs to be kept in a certain way the company defines as acceptable. It needs to look like nobody is working there and forget bringing in personal items. If you do have them, they need to be put away when the "Chairman" is going to be in the building. I could go on, but you get the general idea. The 'culture' is crazy and definitely not for everyone.