The bibles says, "this is the day that the Lord has made, I will rejoice in be glad in it."
Everyday is the Lord's day. So if you must work on a Sunday work and give God the glory. But don't work on Sunday just to work, there needs to be an exception.
Psalm 119:72 says, "the law of Your mouth is better to me, than thousands of coins of gold and silver." There are some things that money just can't buy and that's peace with God.
Joy