The term 'ER Worker' is an abbreviation for Emergency Room Worker. This job involves providing medical care to patients in the emergency room of a hospital. The crossword solution for this term is DOC, which is an abbreviation for Doctor of Medicine. Doctors of Medicine are highly trained medical professionals who specialize in diagnosing and treating illnesses and injuries in the emergency room. They are responsible for assessing the condition of patients, ordering tests, prescribing medications, and providing treatment.