The public service refers to the career employees who work for government, distinct from elected officials and political staff. Federal public servants work for departments and agencies like Service Canada, Canada Revenue Agency, and Health Canada. Provincial public servants staff ministries and agencies, while municipal staff handle local government operations. Public servants are hired based on merit, not political affiliation, and provide continuity as governments change. They implement policies, deliver services, and provide expert advice to elected officials. Canada's professional public service is considered essential to good governance, with legislation protecting hiring and promotions from political interference.