A certified nursing assistant (CNA) provides the hands-on, everyday care that patients need but often can’t manage on their own. That includes helping with bathing, dressing, eating, and moving around, plus monitoring vital signs and reporting changes to nurses. With roughly 1.35 million CNAs working across the U.S., they form the backbone of direct patient care in hospitals, nursing homes, and other healthcare settings.
Daily Responsibilities
The bulk of a CNA’s work revolves around what healthcare professionals call activities of daily living: hygiene, toileting, dressing, eating, and mobility. In practice, a typical morning shift means helping residents use the bathroom, providing oral and denture care, assisting with a bath or shower, helping them get dressed (including grooming like shaving, hair care, or applying makeup based on personal preference), and then assisting with breakfast. Between meals, CNAs make beds, tidy rooms, and help patients get to physical therapy, occupational therapy, or scheduled activities.
The afternoon and evening shift mirrors the morning in many ways. CNAs assist with lunch and dinner, help patients change into pajamas, provide another round of oral care, and handle toileting throughout. What makes these tasks more complex than they sound is that every patient has different physical abilities, preferences, and emotional needs. A CNA working with someone recovering from hip surgery handles mobility very differently than one caring for a resident with advanced dementia.
Monitoring Vital Signs
CNAs regularly measure temperature, pulse, breathing rate, and blood pressure. Their job isn’t to diagnose problems but to catch warning signs early and report them immediately to a nurse. A temperature above 100.4°F signals a fever. A resting pulse below 60 or above 100 beats per minute in an adult needs immediate reporting. A breathing rate below 12 or above 20 breaths per minute is flagged the same way. For blood pressure, readings with the top number below 90 or above 130, or the bottom number below 60 or above 90, get reported right away.
This monitoring role is crucial because CNAs spend more continuous time with patients than any other member of the care team. They’re often the first to notice that something feels off, whether it’s a change in skin color, a new confusion, or a patient who suddenly can’t finish a meal.
What CNAs Cannot Do
CNAs work under the supervision of licensed nurses, and their scope of practice has clear boundaries. They cannot administer medications (unless they hold a separate medication assistant certification). They cannot change oxygen settings or swap oxygen tanks. They cannot give discharge instructions or perform any task that requires clinical judgment or nursing-level decision-making. Invasive procedures like removing a fecal impaction or administering prescription laxatives and medicated enemas are also off-limits.
The guiding principle is straightforward: if a task requires assessment, interpretation, or a clinical decision at any point during or after the task, it falls outside CNA scope. CNAs are trained to observe and report, not to diagnose or treat.
Where CNAs Work
The largest share of CNAs, about 34%, work in skilled nursing facilities (nursing homes). Hospitals employ roughly 30%. Home health care accounts for about 6%, with the remainder spread across assisted living communities, rehabilitation centers, and other settings. The work environment shapes the day significantly. Hospital CNAs may rotate between units and work with patients who are acutely ill and recovering from surgery. Nursing home CNAs build long-term relationships with residents they see every day for months or years.
Specialized CNA Roles
Some CNAs focus on specific patient populations. In hospice care, CNAs assist patients at the end of life with the same core tasks (bathing, feeding, mobility) but with an added emphasis on comfort and emotional support. Hospice CNAs may also help with infection control, housekeeping, and maintaining medical records, and in some settings they assist with medication administration under close supervision.
Memory care units in assisted living or nursing facilities require CNAs who can communicate effectively with patients experiencing significant cognitive decline. The daily tasks are similar, but the approach changes. Redirecting a confused resident, maintaining calm during moments of agitation, and preserving dignity when someone no longer recognizes their own family all demand patience and specialized communication skills that go well beyond the technical requirements of the job.
Training and Certification
Federal law requires a minimum of 75 hours of training for CNA certification, though most states set their own requirements higher. Training programs cover basic nursing skills, infection control, safety procedures, communication, and patient rights. After completing a state-approved program, candidates must pass a competency evaluation that includes both a written (or oral) exam and a hands-on skills demonstration.
Many people complete CNA training in four to twelve weeks, making it one of the fastest entry points into healthcare. Some nursing homes and hospitals even offer free training programs in exchange for a commitment to work at the facility after certification.
Pay and Job Outlook
The median annual wage for nursing assistants was $39,530 as of May 2024, which works out to about $18.96 per hour. Pay varies by setting and location. Hospital CNAs generally earn more than those in nursing homes, and CNAs in metropolitan areas or states with higher costs of living tend to see higher wages.
Career Advancement
CNA work is often a stepping stone to other nursing roles. The most common path is moving from CNA to registered nurse (RN) by completing an associate degree in nursing (about two years) or a bachelor’s degree (four years) and passing the national licensing exam. CNA-to-RN bridge programs, designed specifically for working CNAs, typically take one to two years and include coursework in nursing theory, health assessment, and clinical practice.
One to two years of CNA experience gives applicants a strong foundation for nursing school, both in clinical skills and in understanding how healthcare teams function day to day. Some CNAs pursue the licensed practical nurse (LPN) credential as an intermediate step, which requires about one year of additional education. Others move laterally into specialized roles like certified medication assistant or patient care technician, which expand their scope without requiring a full nursing degree.