Nursing assistants and orderlies are key members of the team that provides personal care to patients in every hospital, clinic, and nursing home. Nursing assistants offer basic care for patients under the supervision of nursing personnel, while orderlies carry patients and clean treatment facilities. Nursing aides respond to patient calls, change or reposition immobile patients, and ensure that each patient receives the proper diet. They assist patients with activities of daily living such as getting out of bed, using the restroom, showering, and walking. Vital indicators such as blood pressure and temperature are measured by nursing assistants. They monitor and listen to the health issues of patients, then document and discuss them with supervising nurses. Orderlies transfer patients from bed to wheelchair or gurney, replace bed sheets, replenish supplies, and clean facilities. Nursing assistants are mostly employed in nursing homes, hospitals, assisted living facilities, and home health care. The majority of orderlies work in hospitals. Nursing assistants and orderlies are often full-time employees. Their job is physically demanding, requiring them to stand for long periods of time and lift and move patients, thus injuries are a possibility. Nights, weekends, and holidays are popular work schedules. Nursing assistants must first undergo state-approved training, which can span anywhere from a few months to a year, before taking and passing their state's certification exam. Orderlies normally have a high school diploma or similar and are trained on the job.