In addition, govt. employment is paid for by those who make something, that is create the wealth that is taxed. Govt. employment doesn't create anything other than a job that is overpaid for the production level exhibited.
How, in God's name, can govt. employment be a viable, contributing factor to the economy, when to pay for it the money has to be confiscated from those who don't work for the govt.
By producing public goods --- such as safety, sanitation, etc. The policeman provides a public service, just as a waiter provides a private service.
[An economy involves production of there kinds of goods: public, private and club goods. The last category is intermediate between public and private.]