Graduate Student Employment Status in North America?

Suppose you are a graduate student, when filling out forms for credit cards, what do you specify as employment status if the student option is not provided?

In particular, if you want to apply for a standard personal credit card (you already have a student card, excellent credit and enough scholarships to cover the required minimum annual income). The main reason I ask is because i would like to have some of the extra benefits of non-student cards. Since I do get paid as a graduate student and meet all the requirements, could I apply for a standard personal credit card and list my employer as my university?