In the United States, there are over 230 amphibians, over 280 reptiles and approximately 800 species of fish. Each of these categories has species represented on the US Endangered Species List.
Employees in the civil services work under one of the independent agencies or one of the 15 executive departments. In addition to departments, there are a number of staff organizations grouped into the Executive Office of the President.
Exempt vs. Non-Exempt. The primary difference between exempt and non-exempt employees is that exempt employees don't get overtime and non-exempt employees do. Classification for exempt and non-exempt workers depends job title, duties and responsibilities, and in some cases, salary and ownership of the company.