There are indeed several things that you should never do professionally, contrary to the age-old saying. In interviewing applicants, you should never write on a resume. Not even in pencil, folks! No, I know there is no law against it, but the law could be enforced based on what you write. There have been more times that I am willing to count that I have been in an interview review session with a client and I have seen them writing on a resume either during the interview or afterwards. ?So?? I hear the group echo. Take a minute to review this information and understand just what type of consequences can be derived from this seemingly harmless action.