I'm going to fire the help my husband hired for me.
Why do you want to fire the help your husband hired for you?
He's not a good worker and all of the previous ones were terrible as well.
If these people were poor workers, firing them seems legit to me in most cases. Next time make sure you involve you husband for the decision, he might have a better solution than what you are doing. He could talk to them and make sure they know what they are required to do.
I can do whatever I want, I don't need to talk to my husband first.
It's good to fire people that are not good workers, but if your husband hired them you should discuss it with him. The two of you should have an agreement on hiring and firing practices for staff. If you're communicating well, things will go much more smoothly.