How to Mail Merge and print labels in Microsoft Word May 04, 2019 · In Microsoft Word, on the Office Ribbon, click Mailings, Start Mail Merge, and then labels. In the Label Options window, select the type of paper you want to use. If you plan on printing one page of labels at a time, keep the tray on Manual Feed; otherwise, select Default. In the Label vendors drop-down list, select the type of labels you are ...