A nurse’s assistant, formally known as a certified nursing assistant (CNA), provides hands-on basic care to patients who need help with everyday tasks like bathing, eating, getting dressed, and moving around. They work under the supervision of registered nurses and serve as the frontline caregivers in hospitals, nursing homes, and assisted living facilities. It’s one of the most physically demanding roles in healthcare, and often the most personal.
Daily Tasks and Responsibilities
The bulk of a CNA’s day revolves around helping patients with what healthcare professionals call “activities of daily living,” or ADLs. These are the fundamental tasks most people do without thinking: brushing teeth, showering, using the bathroom, getting from a bed to a wheelchair, and eating meals. When illness, injury, or age makes those tasks difficult, a nursing assistant steps in.
In practical terms, that means a CNA might spend a morning helping several residents bathe and dress, assisting someone with a catheter or colostomy bag, repositioning a bedridden patient every two hours to prevent pressure sores, and serving lunch to patients who can’t feed themselves. Between those tasks, they take vital signs like blood pressure, temperature, and pulse, then record the numbers and report anything unusual to the supervising nurse. They also change bed linens, clean rooms and equipment, and stock supplies.
One of the less visible but critical parts of the job is observation. CNAs spend more time with patients than almost anyone else on the care team, which puts them in a unique position to notice small changes: a new bruise, a shift in mood, a patient eating less than usual, or confusion that wasn’t there yesterday. Catching those details early and communicating them clearly to nurses can change the course of a patient’s care.
What CNAs Cannot Do
Nursing assistants have a more limited scope of practice than licensed practical nurses (LPNs) or registered nurses (RNs). In most states, CNAs cannot administer medications, start IV lines, perform wound care, or make clinical assessments about a patient’s condition. Some states do allow CNAs to dispense medication if they’ve completed additional training, but this is the exception. LPNs handle tasks like medication administration, wound dressing changes, and IV therapy. RNs manage the overall care plan, make clinical judgments, and supervise everyone below them. CNAs carry out the care plan rather than creating it.
Where Nursing Assistants Work
The largest employer of CNAs is skilled nursing facilities, commonly known as nursing homes. Nearly 459,000 nursing assistants work in these settings, where they make up about a third of the entire workforce. Hospitals employ the second-largest group at roughly 411,000. After that, continuing care retirement communities and assisted living facilities account for about 146,000 positions, followed by home health care services at around 81,000.
The work looks different depending on the setting. In a nursing home, you’re caring for the same residents day after day, building relationships over months or years. In a hospital, patients rotate through more quickly, and the pace can be more intense. Home health CNAs travel to individual homes and often work one-on-one, which offers more autonomy but also more isolation from a care team.
Staffing and Workload
A federal rule finalized by the Centers for Medicare and Medicaid Services requires long-term care facilities to provide at least 2.45 hours of direct nurse aide care per resident per day. That standard, combined with the overall requirement of 3.48 total nursing hours per resident day, gives a rough sense of how thinly CNAs can be stretched. In a facility with 40 residents, meeting that minimum means scheduling enough aides to cover nearly 100 hours of direct care daily. In practice, many facilities have historically staffed below recommended levels, meaning individual CNAs often care for 10 or more residents during a single shift.
The Physical and Emotional Demands
This is not a desk job. CNAs are on their feet for most of a shift, lifting and repositioning patients who may be unable to support their own weight. Back injuries are common. Shifts often run 8 to 12 hours and can include nights, weekends, and holidays, since patients need care around the clock.
The emotional side is just as intense. You’re caring for people at their most vulnerable, sometimes through the final stages of life. The role requires genuine empathy, patience, and the ability to stay calm when a patient is frightened, confused, or in pain. Conflict resolution matters too, since patients dealing with illness or cognitive decline don’t always respond kindly. Strong communication skills are essential, both for interacting with patients and for relaying accurate information to the rest of the care team.
How to Become a CNA
Federal law requires a minimum of 75 hours of training, including at least 16 hours of supervised clinical practice. But most states set the bar higher. Over half of states require more than 75 total hours, with some going as high as 180. Thirteen states and the District of Columbia require 120 hours or more. Clinical training requirements vary widely too, ranging up to 100 hours of hands-on practice in some states.
Training programs are offered through community colleges, vocational schools, hospitals, and organizations like the Red Cross. After completing the program, you take a state competency exam that typically includes a written portion and a skills demonstration. Passing that exam earns your certification and places you on your state’s nurse aide registry.
For many people, the CNA role is a starting point. The time spent doing direct patient care builds clinical experience and helps you decide whether to pursue further education as an LPN or RN. Others make a long career of it, particularly in long-term care settings where the relationships with residents become deeply meaningful.