A certified nursing assistant (CNA) provides support and care to patients in a clinical setting or another medical facility, such as an assisted living center. In this job, you help patients with daily tasks, aid patients while they undergo therapy, or check vital signs and ensure that patients take medication. CNAs can have other responsibilities depending on the needs of physicians and nurses with whom they work. A weekend CNA works on Saturday and Sunday. Some weekend CNA jobs involve working exclusively on weekends, while other CNA positions may include a weekend shift as part of the rotation.