If you are under sponsorship of your husband, you dont need an exit permit...if you are a working lady under sponsorship of a company, you'll need an exit permit to leave the country.
GCC residents having some specific professions mentioned on their Iqama (RP) are entitled to get a visa on arrival in UAE...e.g. Doctors, Engineers, Managers etc. If you are under the sponsorship of your husband then you'll have to apply for a visit visa in advance.