Some context for the fun of it. Sabbath is the 7th day of rest that the God of Genesis took -- yes even God found rest to at least be good (if not needed). He also prescribed for the jewish people of the Old testament seven sacred feasts, which could be multiday if not weeklong festivities and breaks from work. Then there was the Sabbatical you mentioned -- One year off in 7 to rest the land and labor. Furthermore there was Jubilee -- a sabbatical year that went even further :)

Seems like ancient people (if not God) deeply understood the need for rest!