Operation Day's Work is a solidarity program based on volunteering by high school students. It was implemented in Norway to honor the former Secretary-General of the United Nations, Dag Hammarskjöld. During Operation Day's Work (also called Solidarity Action Day), students get the chance to exercise a job of their choice instead of going to school for one day. They donate their salaries to youth-related projects from all over the world. Today there are Operation Day's Work organisations in several countries.