In most states, a certified nursing assistant must renew his license every two years. Applicants must renew with the nursing board or licensing authority of the state in which he practices.
To qualify for renewal, the applicant must meet state mandated requirements relative to hours worked per week, and he must not have any complaints of abuse or neglect on his record. Some states also require applicants to meet continuing education requirements. Failure to meet state issued mandates can result in the license status being declared null and void, which then requires the applicant to apply for a new license, pass a background check and re-take the CNA certification exam.