How much interaction with law enforcement does an employee need to reveal?

Q: I am employed by a Fire District, which is considered a governmental employer, and have to abide by public employment laws. Our Assistant Chief has informed members of the department that any time they have any interaction with law enforcement, whether the police make the contact or they do, they have to advise him as to what happened, regardless of whether or not they received any written warning or citations, or even nothing at all. He has also told them they have to advise him any time they are involved with the court system for any reason. The example he used is, even if you are adopting a child you have to advise the department. Can the department require all employees to report any and all interactions with any law enforcement body or the court system for any reason, even if it does not and cannot affect their employment status?  – Charlotte, Arizona