Essential municipal officers and servants

A. Essential municipal officers and servants.- No essential municipal officer or servant shall-

1. (a) Unless he is authorized in that behalf by the terms of his contract, resign his appointment or quit his employment without giving a notice in writing of not less than one month to the authority appointing him, of his intention so to do; or
2. (b) absent himself from duty otherwise than on leave duly granted and not subsequently cancelled; or
3. (c) neglect or refuse to perform any of the duties or willfully perform them in an inefficient manner.