different job culture

I met American friend today.

He works finance company, and we talked about job.

Japanese company system is different from American company system.

1: Most Japanese do not change the company. They work for about 40 years until they retire.
   Most American change their job for improving.

2: Getting older, getting high salary in Japan.
   In USA, if they have good job ability, wage becomes high.

3: All Japanese company have labor union. All employee need to join labor union.
   Only low wage company have labor union.

They have more different system.

I was surprised at American labor system.

So many countries, so many customs.