The disciplinary policy at Commerce allows only one punishment for "violation of 'no-strike' affidavit": removal. An affidavit is a written declaration under oath, made without notice to the adverse party.An affidavit is a written statement made under oath that is typically used in legal proceedings. Learn their purpose, when to use, and how to write. An affidavit is the written equivalent of verballygiven court testimony. An affidavit is a type of legal document that contains a written sworn statement.