Pros
Co-workers, whether in your location, other plants, or HQ tend to be friendly, helpful, and willing to teach you the ins-and-outs of the business and your job. Hours tend to be short, a strict 40 hour week. Everyone bolts for the door at 5pm and the boss (GM) locks the door at 5:15. No need to take work home with you, leave your cell phone on, etc. Your responsibility ends when you leave the office. The majority of the VP/GM's are pretty reasonable to work for. There is some flexibility if you need to alter your schedule for personal business, all they care is that you get your 40 hours in. There are dozens of plants to work at across the country, and you have the opportunity to apply for other locations if you choose. Most of the offices are pretty small and there is very little of the corporate politics you usually find at large companies.
Cons
Lamar seems to always be having financial problems, leading to constant penny-pinching in all areas. Don't think you're going to get decent bonuses, nice holiday parties, good raises, etc. unless you're in management. One year our holiday bonuses were $20 gas cards. Pay for many positiions is well below the market rate. Benefits are "acceptable." Unless you're a VP/GM you're not going to earn anything substantial at Lamar. A few of the VP/GM's are extreme micromanagers, cheapskates, etc. but you'll learn who they are quickly. Most of the IT systems/programs are horribly outdated. The monthly car allowance is low and was set in the era of $1.50/gal gas. If you're an account exec, real estate mgr, etc. covering a lot of turf, it comes nowhere near the cost of operating your car unless you drive an old clunker. There is little to no opportunity for advancement, unless you're a account exec who plans on staying for 20 years, at which time you may be considered for a VP/GM positiion. If you're not working in HQ, senior management is non-visible and out of the picture - might be a good thing though.