The other company (auto parts manufacturer as well) had similar badge system as discussed in the article, employees with lowest ranking badge were considered the "lowest class", no one except their immediate supervisor talked to them and listened to them. This segregation meant they had no incentive to work intelligently or report problems. All they wanted to do was to do their jobs and get the hell out.
It was quite educating to work under the two contrasting management structure. The first one was a breath of fresh air and the second was very suffocating.