so if your boss asks you to work on saturday, you should do it, and do it for free, and refuse pay
otherwise you sin against him because you leave him in need when it's in your hand to help, and you sin against God because you should treat your work as tho to God not your human boss, and you sin against your conscience because you think working for pay is wrong.
Do not say to your neighbor,
“Go, and come back, and tomorrow I will give it,”
when you have it with you.
(Proverbs 3:28)
If anyone wants to sue you and take away your tunic, let him have your cloak also. And whoever compels you to go one mile, go with him two. Give to him who asks you, and from him who wants to borrow from you do not turn away.
(Matthew 5:40-42)
refusing to do what is asked of you is not what sabbath is about.