A CNA, or Certified Nursing Assistant, is a healthcare worker who helps patients with everyday physical needs like bathing, dressing, eating, and moving around. CNAs work under the supervision of licensed nurses and are the frontline caregivers in nursing homes, hospitals, and other care facilities. They don’t diagnose conditions or administer most medications, but they spend more hands-on time with patients than almost anyone else on a healthcare team.
What a CNA Actually Does
The core of a CNA’s job revolves around what healthcare professionals call “activities of daily living.” These are the basic tasks that healthy people do without thinking but that patients recovering from surgery, living with disabilities, or aging in care facilities need help with. That includes bathing and washing, brushing teeth, grooming and hair care, getting dressed, using the toilet, and moving from a bed to a wheelchair or from a room to the dining area.
Beyond personal care, CNAs collect basic health information. They take vital signs like blood pressure, temperature, and pulse. They track how much a patient eats and drinks, and they monitor output. They observe changes in a patient’s condition and report those to the nurse in charge. This reporting role matters more than it might sound. Because CNAs spend the most time at the bedside, they’re often the first to notice when something is off.
CNAs also help keep patient areas clean, assist with repositioning patients to prevent bedsores, and support patients during meals. In some states, specially certified CNAs called Certified Medication Aides can administer certain medications, but that requires additional training beyond the standard certification.
How CNAs Differ From Nurses
CNAs fall into a category called Unlicensed Assistive Personnel. Unlike Registered Nurses or Licensed Practical Nurses, they don’t hold a nursing license, don’t pass the NCLEX licensing exam, and don’t have an independent scope of practice defined by state law. Instead, a CNA performs tasks delegated by a supervising nurse, and that nurse remains legally accountable for making sure those tasks are completed correctly.
In practical terms, this means a CNA cannot independently assess a patient’s condition, create a care plan, start an IV, or make clinical decisions. Their role is to carry out specific tasks assigned by licensed staff and to communicate what they observe. The title can vary by state. You might see the same role called a Patient Care Assistant, Patient Care Technician, State Tested Nursing Assistant, or Nursing Assistant-Registered, depending on where you live.
Training and Certification Requirements
Federal law requires a minimum of 75 hours of training to become a CNA, though many states set their requirements higher. Of those 75 hours, at least 16 must be supervised practical training in a lab or clinical setting where the student demonstrates skills on a real person under the direct watch of a registered nurse or licensed practical nurse.
Before a trainee has any direct contact with a resident, they must complete at least 16 hours of classroom instruction covering communication skills, infection control, safety and emergency procedures (including the Heimlich maneuver), promoting patient independence, and respecting residents’ rights. Many training programs are offered through community colleges, vocational schools, the Red Cross, and some healthcare facilities themselves. The entire program can often be completed in four to twelve weeks, making it one of the fastest entry points into healthcare.
After finishing a state-approved training program, you must pass a competency evaluation. In Washington State, for example, the skills exam covers 22 clinical skills. The exam typically has two parts: a written or oral knowledge test and a hands-on skills demonstration where you perform tasks like handwashing, taking blood pressure, or assisting with transfers while an evaluator watches. Once you pass, your name is added to your state’s Nurse Aide Registry.
Keeping Your Certification Active
CNA certification isn’t permanent. You need to perform qualifying work within a set time frame to stay on the registry. In North Carolina, for instance, the renewal period is 24 consecutive months, and you must complete at least 8 hours of paid nursing assistant work during that window. If you let your certification lapse by not working, you’ll need to retrain and retest from scratch. Requirements vary by state, so it’s worth checking your own state’s registry rules early.
Where CNAs Work
The largest employer of CNAs is the long-term care industry. Nursing homes and assisted living facilities rely heavily on nursing assistants to provide daily resident care. Hospitals are the second major employer, where CNAs work on medical-surgical floors, in emergency departments, and in rehabilitation units. Home health agencies also hire CNAs to provide one-on-one care in patients’ homes, and some CNAs work in outpatient clinics or hospice settings.
The work environment shapes the daily experience significantly. A CNA in a nursing home might care for the same residents for months or years, building long-term relationships. A hospital CNA sees higher patient turnover and more acute medical situations. Home health CNAs work independently with less immediate access to a supervising nurse but enjoy more flexible scheduling.
Physical Demands of the Job
CNA work is physically intensive. You’ll spend most of your shift on your feet, bending, lifting, and repositioning patients. Research published in the American Journal of Nursing recommends a 35-pound upper limit for manual patient transfers, and while modern facilities use mechanical lifts and slide boards to reduce strain, the reality is that CNAs still do a significant amount of physical labor. OSHA does not set a specific weight-lifting limit for healthcare workers, so requirements vary by employer. Back injuries are among the most common workplace injuries in the field.
Shifts often run 8 to 12 hours, and overnight, weekend, and holiday work is standard in most settings. The emotional demands are real too. CNAs form close bonds with patients, particularly in long-term care, and deal with illness, decline, and death as part of the job.
Pay and Job Outlook
The median annual wage for nursing assistants was $39,530 in May 2024, which works out to about $18.96 per hour. Pay varies considerably by state, employer type, and shift. CNAs working night or weekend shifts often earn a differential, and those in hospitals tend to earn more than those in nursing homes. Urban areas generally pay higher wages than rural ones.
Demand for CNAs remains strong. An aging population means more people need long-term care, and high turnover in the field creates consistent openings. For many people, the CNA role also serves as a stepping stone. Working as a nursing assistant gives you direct patient care experience that strengthens applications to nursing school, and some employers offer tuition assistance for CNAs pursuing an LPN or RN degree.