Exodus 1:11

1:11 So they put foremen over the Israelites to oppress them with hard labor. As a result they built Pithom and Rameses as store cities for Pharaoh.

Exodus 5:4

5:4 The king of Egypt said to them, “Moses and Aaron, why do you cause the people to refrain from their work? Return to your labor!”

Exodus 34:21

34:21 “On six days you may labor, but on the seventh day you must rest; even at the time of plowing and of harvest you are to rest.