I was just on the IRS.GOV webstite and spent quite some time reading the instructions and requirements for the information to be provided for an employee W2 and the employer W3. Nowhere does it state that the DOB is now manditory for processing either one. If the DOB were required it would be on the form for those who Mail In the employee W2 & the employer W3. Seem it is only a QB thing. I have employees that do not wish to supply their DOB and I guess since it is actually a law at this point that it is an optional question to answer on employee forms, I will not be asking them for it.