If you don't receive your Form W-2 (PDF) by February 15, contact the IRS for assistance at (800) 829-1040. Also, you may want to refer to Tax Topic 154, Form W-2 - What To Do if Not Received, to see the specific information the IRS will need in order to prepare a Form 4598, Form W-2, 1098 or 1099 Nor Received, Incorrect, or Lost. You will be sent a copy of Form 4598 along with a Form 4852, Substitute for Form W-2, Wage and Tax Statement, or Form 1099R, Distributions from Pensions, Annuities, Retirement or Profit Sharing Plans, IRAs, Insurance Contract, etc.

References:

• Form 4852 (PDF), Substitute For Form W-2, Wage and Tax Statement, or Form 1099R, Distributions from Pensions, Annuities, Retirement or Profit Sharing Plans, IRAs, Insurance Contracts, etc.
• Tax Topic 154, Form W-2 - What To Do if Not Received

Source: www.irs.gov