How many years can you work for same job?

I heard that Americans never do the same job for so many years.
And also if you can have many much job experience , that would be good for Americans job(?)
But usually Generally Japanese men will do the same job for 10 -30 years or more.
Sometimes Japanese also change their jobs or start their own business.
But in Japan, if you change your job always always,, frequently,then Japanese won't hire you.
Hmm I wonder how about other countries.
For example, Canada or Australia ..
I'm very interested in western countries :)

How many years can you work for same job?

How many years do you work at the same job?

I heard that Americans never do the same job for so many years.

And also if you can have many job experience , that would be good for Americans job(?)

And also having a lot of job experience is good for American jobs.

But Usually Japanese men will do the same job for 10-30 years or more.

Sometimes Japanese also will change their job or start their own business.

But in Japan, if you change your job always always, then Japanese won't hire you.

But in Japan, if you change your job always always a lot, then Japanese won't hire you.

But in Japan, if you always change your job always always, then Japanese won't hire you.

These are two possible ways to edit this sentence. It's not proper english to say repeat words like "always always", but there are definitely people who talk this way. So feel free to use it if you're comfortable with it, but just remember its very very casual ;)

Hmm I wonder how about other countries.
For example, Canada or Australia ..
I'm very interested in western countries :)

Hmm, it depends on the job in America. It's true that if you change jobs too much people won't want to hire you, but in some fields you can change pretty often. Some jobs you change every 1-3 years, and some jobs you keep forever. Americans, typically, place great value on working at a place they enjoy. So, you may change jobs a few times to find that place.

How many years can you work at the same job?

I heard that Americans never work at the same job for many years.
And Also if you can have many job experiences , that would that be good for Americans job(?)
But Usually Japanese men will work at the same job for 10 -30 years or more.
Sometimes Japanese workers (or "men" to stay consistent with the previous sentence) will change their jobs or start their own businesses.
But in Japan, if you change your job a lot (or "frequently"), then Japanese companies won't hire you.
Hmm I wonder how about other countries.
For example, Canada or Australia ..
I'm very interested in western countries :)

I hope you can understand my edits.