It depends on your state. You can in my state and probably some others, but unfortunately it appears that you cannot in Michigan. I tried to find some info for you from Michigan's Dept. of Community Health, but it was limited. If you have adobe, you can view frequently asked questions here :
This is quoted from the above link:
17a. I have been an RN for years, but I would like to be a Nurse Aid now. How can I apply?
b. My LPN license was revoked. Can I become a Nurse Aid?
Federal regulations prohibit licensed health professionals from being registered as nurse aids. Even if your license was revoked, you are still considered a licensed health professional.
Additionally, the tasks a nurse aid complete are significantly lower level than those of other health professionals. It would be difficult for health professionals trained in a higher skill level to limite their activities to those of a nurse aid. Practicing high level tasks would be a violation of the nurse aid regulations.
I would contact someone at your board of nursing directly, as that is what I did to find out that in Maryland, an RN can work as a nursing assistant. I am not sure why it is possible in MD, as the above quote states that it is a federal regulation, that governs this.
If you can work as a CNA, you may need to obtain a nursing assistant certification in addition to your RN license.
Quotes from the director of nursing practice at the Maryland Boad of Nursing-
-"Registered Nurses are not prohibited from working in a position as a CNA when the registered nurse has been issued the certification as a CNA from the MBON"
-"The RN who is practicing as A CNA is held to the CNA standards UNLESS there is a Pt emergency --then in that PT emergency the RN practicing as a CNA is expected to work to the fullest extent of the RN license--so it is a specific PT emergency that permits the exception"
From the Administrator for the Nursing Assistant Certification Program in Maryland:
"The Board does not have any regulations which prevent an RN who is currently certified as a CNA in good standing, from working as a CNA."
If you can work as a CNA, you probably have to obtain a Request for Exemption from Nurse Aid Training form, ph # 517-241-0554, which is the case for nursing students in Michigan.
Hope this helps. Good luck to you!