Exodus 20:9 New English Translation

⁹For six days^[a] you may labor^[b] and do all your work,^[c]

Exodus 20:9 tn The text has simply “six days,” but this is an adverbial accusative of time, answering how long they were to work (GKC 374 §118.k).
Exodus 20:9 tn The imperfect tense has traditionally been rendered as a commandment, “you will labor.” But the point of this commandment is the prohibition of work on the seventh day. The permission nuance of the imperfect works well here.
Exodus 20:9 tn This is the occupation, or business of the work week.

New English Translation (NET)