Homework / test inglés al español Jurídico/Patentes Gobierno / Política USA government positions

"The Office of Personnel Management, fo example, supervises the provisions of the Hacht Act that regulate the political activities of career employees"

Dear all,
could you explain to me what does exactly this term means? Ia this an employee with university studies? Or is someone with a more important position in the goverment?
Thanks in advance.