Question on County or Municipal Employee Carry Rights

[Shooter Patriot]

I am aware that in PA private employers may restrict the rights of employees to carry while working.

However can public employers such as towns and counties pass the same restriction?

"§ 6120. Limitation on the regulation of firearms and ammunition.

(a) General rule.--No county, municipality or township may in any manner regulate the lawful ownership,possession, transfer or transportation of firearms, ammunition or ammunition componentswhen carried or transported for purposes not prohibited by the laws of this Commonwealth."

Would "in any manner" include employment policies? It seems that in an area where anyone may carry into a township building, that the town shouldn't be able to restrict employees from doing so. I searched but could not find any caselaw regarding this.

Does anyone know of any case law regarding this matter?