Yom Kippur is a complete Sabbath, meaning no work can be performed on this day.
Yom Kippur is a complete Sabbath, meaning no work can be performed on this day. It includes a complete fast and solemn services. “Yom Kippur” means “Day of Atonement.”
http://www.jewishvirtuallibrary.org/jsource/Judaism/holiday4.html