Pros
PACCAR is a solid company that has been making a profit for over 72 years. Even in the tough economic conditions they will be profitable and survive the storm. They give people opportuntities to grow and move up in the organization. Promotion from within is a common practice. Company is very results orientated and fiscally responsible. The conservative nature of PACCAR has reaped benefits for the stock holders over the years. Product quality is high.
Cons
The conservative nature of the company makes it difficult to do anything fast. While this has many benefits, it can be frustrating when you see what needs to be done but can't do anything due to lack of money or management support. This culture permeates everything from dress code to organization to investment decisions. The organization is very hierarchical. What has made PACCAR profitable for 72+ years may also be the biggest con.