I have a horrible feeling that yours is likely to be a minority view, Guest.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
GuestIt is my contention that you can use either "do" OR "does" in the part of the sentence after the comma.No, only 'do'.
If you or your company does not receive the paperwork before the end of the year, please contact our office.