Теория:

To speak about work, you need the appropriate vocabulary.
  
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Pension plan - a financial plan that allows you to receive money after you or your employer have paid money into it for a number of years;
 
Retirement plan - pension plan;
 
Data-entry clerk - a person who puts information into a computer database;
 
Necessary - needed in order to achieve something;
 
Permanent - continuing forever or for a long time;
 
Temporary - existing or happening for only a short or limited time;
 
Terminate - finish something.
 
Examples:

Some workers have necessary skills work.

I need a retirement plan.

I can work as a data-entry clerk.
Источники:
skyeng.ru