I am missing a w2 but have the employer's federal ID number

[ErinH]

The deadline for employers to send out W-2's has come and gone. Since you haven't received yours: 

1. Grab your last 2016 paystub and call the IRS at 1-800-829-1040.
2. The IRS will ask you for some info before following up with your employer.
3. After notifying the IRS, you can either continue waiting for your W-2, or paper-file your return using Form 4852 and your last paystub. Instructions

Tip: If you have your employer's EIN, you might be able to import your W-2. (If your employer is partnered with TurboTax you should be able to). Here is how: https://ttlc.intuit.com/replies/3389204