What is an important livelihood in South Korea?

A great afternoon, Sir [이름]!

Your livelihood is the job or other source of income that gives you the money to buy your necessities. You supplied an explicit composition for this question. See you in class!

~Teacher Eunice

I don\'t understand exactly what livelihood means.

>>> correct!

Dose it mean that the job or other sources that give me the money?
>>> Is it the job or other source that give me money?

>>> OR: Is it the job or my other source of income? 

If it is the job, I would say that all job is important in our country.
>>> If it is the job, I would say that all jobs are important in our country. 

Our society could not be running if somebody didn\'t work the field they are in.

>>> correct! 

Politicians are important to manage our nations and people. 

>>> correct! 

However, I would like to explain this issue within my field. 

>>> correct! 

When people think of the worker in the hospital, they thought there are only doctors and nurses.

>>> When people think of the workers in the hospital, they thought there are only doctors and nurses.

But it is not true.

>>> correct!

There are a lot of professional workers in the hospital and every position have a important duty. 

>>> There are a lot of professional workers in the hospital, and every position has an important duty. 

If one of the professional field was expected to work in the hospital, patients might not get good treatment. 

>>> If one of the medical professionals was expected to work in the hospital, patients might get good treatment. 

There is an idiom in Korea, it is that there is not a valuable job, all occupations are equally honorable.

>>> There is an idiom in Korea, it is \"there isn\'t a valuable job, all occupations are equally honorable.\"  

I believe the idiom.

>>> I believe in that idiom.