Final answer:
Governmental agencies, in coordination with workman's compensation insurance and organizations like OSHA, are responsible for providing care to injured or sick workers.
Step-by-step explanation:
The organization responsible for medical clinics for injured or sick workers is commonly a governmental agency like Health and Social Services. This government entity often works in conjunction with workman's compensation insurance, a system where employers contribute to state-level funds designed to cover healthcare and financial benefits for workers who have sustained job-related injuries. Furthermore, the Occupational Safety and Health Administration (OSHA) plays a pivotal role in protecting workers and ensuring safe workplace conditions, which may also involve healthcare aspects for injured employees.