What confirms that municipal government does not set tax assessors' hours?

Case law is the correct answer because it establishes legal precedents that clarify the authority and functions of various government positions, including tax assessors. In the context of New Jersey, case law takes precedence over ordinary municipal practices or guidelines, showcasing that the autonomy of tax assessors regarding their hours is supported by judicial rulings.

Legal determinations made by courts inform municipal governments about the limits of their authority over tax assessors, specifically indicating that these assessors have discretion over their working hours. This understanding helps maintain the independence of the assessor's role and ensures they are not unduly influenced by municipal government scheduling or directives.

Other options do not carry the same weight in determining legal authority. State regulations might outline general functions or duties, but they don't specifically address the governance of a tax assessor's working hours. Ordinary municipal practice reflects what is done commonly by local governments but lacks the binding legal authority of case law. Tax assessor guidelines may provide best practices or recommendations but do not possess the legal grounding to override the independence placed upon tax assessors as established by case law.