June 3, 2019 1:19 PM
No, you do not need to mail in your W-2s. According to the IRS,
See the IRS site for more information: https://www.irs.gov/help-resources/tools-faqs/faqs-for-individuals/frequently-asked-tax-questions-an...
"You don't need to send your Forms W-2 to the IRS and should keep them in a safe place with a copy of your tax return."