work de gozaimasu

now i work in japan company, in my opinion they are very kind, hard worker, on time, and ...

They tend to place themselves in their own exclusive and closed communities. Accordingly, they have introverted personalities and they pay serious attention when they are work. They feel comfortable with familiar people in the communities they belong to. The behavior of competition and appealing themselves is observed only within their own community. Consequently, they have more interest in human feelings and emotions than scientific or logical concerns. 

Japanese people tend to accomodate others opinions rather than speak up for themselves. They attach much importance to harmony. In discussions, Westerners clearly express their own opinions and speak directly in order to avoid confusion. On the other hand, Japanese people do not speak directly on the understanding that it is polite not to be direct. Expressing a contrary opinion would imply disrespect of the other person. This is why it is said that Japanese people don't say "no".