Pros
The pros I list here are for Micron's Virginia site. The site had an excellent employee training program for new hires and employees with a few years of experience. The yearly review was very structured and I would venture to say it was fair. There is a career ladder which lists the requirements for promotions and so on. Basically, the site was very orderly and structured. I feel that employee development was very good, up to a certain point. I think the benefits are good. I was an above average employee and I got promotions every 2 - 3 years. But if you're not getting promotions, the salary increase will certainly stagnate. The promotions also use to be very difficult, but it seemed to have relaxed in the last few years.
Cons
The cons I list here are for Micron's Virginia site. Some of these cons might apply to any semiconductor fab and not just to Micron's Virginia fab. This is a fab environment, so everyone is expected to be on site by 8am. There is a daily morning meeting to discuss what happened the day before. For some people, there is also a daily tactical meeting where a representative from every team in the fab meets to discuss the issue. There always seems to be too many meetings. This site is Micron's only wholly owned fab in the US. It is has become a legacy fab and I don't expect there to be any new technologies to be coming to this site. The culture seems to be focused on how much time you spend at work and not about results. I think the strongest argument for this point of view is that one of the metrics for promotions is starting/ending times at the site for a 3 - 6 month period. If the person about to be promoted didn't spend enough hours at work, their promotion would be delayed. The last con I can think of is that this site is the only semiconductor site in the northern VA area. This leads to a lack of competition for Micron. Employees can't negotiate very well in this kind of environment and management doesn't see any need to offer any sort of perks for their employees.