A "labor of love" is something that you do because of love or because you love to do it. Example: "They always want to pay me for the work I do at the hospital, but I will never accept their money. I do it because it is a labor of love." "Labor" is work that we do and we don't always care for our work, but a labor of love is labor we do because we love dong it, or we do it for someone we love. Example: "My Dad took care of his mother for many years and kept her comfortable even after she became very sick; it was a real labor of love." Even the most difficult task seems easy to us when they are a "labor of love."