What Form W-2 is and who completes it
irs.gov says every employer engaged in a trade or business who pays remuneration, including noncash payments, for services performed by an employee must file Form W-2 for each employee to whom any of these applies: income, Social Security or Medicare tax was withheld; income tax would have been withheld if the employee had not claimed exemption from withholding on Form W-4; or payments meet or exceed the reporting threshold even if no tax was withheld. The employer completes the form. An employee does not fill in their own W-2.