I'm not sure what link Mike9241 meant to give you, but it's probably this one on the IRS web site.
Incorrect Form W-2
If you end up needing to file Form 4852, TurboTax will prepare it for you and include it in your tax return. You do not have to wait to get it from the IRS or use the Form 4852 that the IRS sends you.
As you may know, contacting the IRS is very difficult recently. They are severely overloaded and understaffed, but they are trying to improve. If you do contact them and they send a letter to your employer, knowing that they have caught the attention of the IRS might encourage your employer to correct the W-2. If you are unable to contact the IRS, you can still include Form 4852 in your tax return on your own.
