A womans work is haram if it involves indulging in something that is not permissible in islam like making or selling things that are not permitted, mixing with men, working in banks and so on. In such cases it may become haram for a woman to work. If such is the nature of work than a woman must give it up and look for a halal means of earning or simply a permissible job.
Her husband is obliged to spend on her on a reasonable basis, according to what he can afford. See question no.
If her work is permissible, and she falls sick and going to work is too difficult for her, or will delay her recovery or make her sicker, then the husband must pay attention to that. It is not permissible for him to demand that his wife do something that will cause her harm.
The husband must treat his wife in a kind and reasonable manner. Allaah says (interpretation of the meaning):
“and live with them honourably”
It is not reasonable or honourable to demand that the wife go to work when she is sick.
The Prophet (peace and blessings of Allaah be upon him) enjoined the men of his ummah to treat women well: “(I urge you) to treat women well.” (Narrated by al-Bukhaari, 3331; Muslim, 1468.
What this hadeeth means is: accept this advice and follow it: treat them kindly and live with them honorably.
The husband should live with his wife with dignity and honour. He must not doubt her sincerity and the relationship must be based upon trust and honesty. There shouldn't be any space for suspicion and doubt.
Wife should work only with the consent of her husband but that doesn't mean that he should force her to do work and earn. May Allah guide all muslims and make our families stronger and full of love and honour.
And Allaah knows best.