I was recently reading the autobiography of the CEO and one of the founders of Sony, Akio Morita. Sony Japan has been famous for having uniforms, like many other Japanese companies (which Steve Jobs really liked and wanted to emulate, except the idea was shot down early on. He did apply the idea to himself though, which is where his famous look comes from).
Many people would ascribe this as Sony being a typical, paternalistic Asian company - however, the reality is a bit more subtle. Keep in mind that Sony was started right after World War 2, in a Tokyo ravaged by years of bombing:
"When we started the company, clothing was scarce and expensive on the black market. People came to work in an odd assortment of gear; returning soldiers wore bits of their uniform or old-fashioned suits that had been saved for many years. If a person was fortunate enough to have a good suit, he didn't want to wear it to the office where he might risk burning a hole in it with acid or soiling it. Some of our employees just didn't have the money to invest in a work jacket. So with company money we bought a jacket for everyone to wear in the office.
Pretty soon these jackets became a symbol of our company family. As the company prospered, we could have done away with the jackets - we used to have a summer jacket and a winter one - because we were all being paid and could afford our own, but everybody seemed to like the idea, and so we just decided to continue to provide them. In the beginning, we executives had a different colored name tag from the others, but we eventually adopted the same kind worn by everyone else.
Today these jackets and tags are being used everywhere, even where class distinctions made people hesitant to wear them at first. Many of us liked our blue jackets, and I still wear mine occasionally."
Akio Morita, Made in Japan