Employees in case worker jobs have a desire to help other people improve their current life situation. Case worker jobs are ideal for those who want to make a difference. Those employed in case worker jobs can help others cope and find solutions to everyday problems, including social problems and substance abuse issues. There are a variety of case worker jobs, including child, family and school social workers; public health and medical social workers; mental health and substance abuse social workers; and social and human service assistants. Other case worker jobs include eligibility interviewers for government programs, rehabilitation counselors, substance abuse and behavioral disorder counselors and mental health counselors