A method for issuing a label, including feeding a first label sheet including a support and a thermosensitive adhesive layer located overlying one side of the support, wherein the first label sheet has a timing mark on the thermosensitive adhesive layer; detecting the timing mark; and cutting or semi-cutting the first label sheet to produce a second label sheet, wherein the timing mark is present at a position other than corners of the second label sheet, and wherein a ratio of an area of the timing mark to an area of the second label sheet is from 0.5 to 35%.