Yes, for most of history, people have worked a six-day week, in fact my wife remembers having school six days a week in Europe. Though, as of the latter part of the 20th century, it has become more common to have a 5 day work week.
I think the principle can still be held to in that we have so much work we need to do around the house and garden, that Saturday in many ways is able to be put to being productive (even if not commercial) with work around the home. Or, if we do not have many duties at home, we can donate our time to helping with the local church, Mission, animal rescue, etc.
Today, our society does seem to have more leisure time than any previous generations.
That may not be healthy if it is wasted. However if it is channelled into good, productive volunteer work for God's Kingdom and the community, caring for God's creatures, then it can be a very good thing.
May God continue to bless, guide and strengthen you.
Yours for the fulfilment of the Great Commission
Dr. Peter Hammond
How the Soviets and Cubans lost the War in Southern Africa