what are the implications? That is, if a budget carries the force and effect of law and a city department goes over budget, how do they navigate this?...

when a city does go over budget, what are the implications? That is, if a budget carries the force and effect of law and a city department goes over budget, how do they navigate this? What must the department do to get more money? Since there is not normally a "bottom line" as in business where cost overruns just eat away at profit, how can a government manage spending more than they've allocated?150 words or more list any reference used