As a means of identification as well as for wage and tax reporting purposes. It may also help determine if you can validly work in that country.
No, employers are required to check Social Security numbers.
It is not possible to calculate or determine someone's social security number from their driver's license number. Social security numbers and driver's license numbers are issued and maintained by different government agencies and are not connected in a way that allows for such a conversion. It is important to protect personal information and avoid attempting to link unrelated identifiers.
Yes, all employers are required to get a Social Security Number and validate the citizenship of all employees. Even minors have to provide proper information.
From your social, your birth date, and your address. Depends on the position if its for security clearance for example they use all information. Same thing with drivers they'll use your drivers license #. All depends on the position.
Both. Employers and employees contribute an equal percentage of the employee's income to Social Security.
No. The SSA does not issue social security numbers that begin with 9. Taxpayer identification numbers are not social security numbers, but you can use them to get a drivers' license, open a bank account, etc.
The Social Security Administration issues Social Security numbers.
the people and employers
Since social security numbers have numeric values, a social security number is an example of a qualitative variable.
No. An employer can use a driver's license number as well. It is easier with a SS#, but it can be acquired with the driver's license too. (At least in the USA.)
taxes on employers and employees.
The W-9 Form is used by employers to request taxpayer identification numbers, or social security numbers of employees. This form is from the Internal Revenue Service.