The solution is in NATS hands. Almost every other service industry company which wants to project a brand image or smart staff to the public provides them with a uniform. That allows little leeway for personal interpretation of the rules or arguments about what is and isn't acceptable. Branded polo shirts and other attire should be provided if NATS require a consistent dress code which projects the image they want.
Or we could go for airline style uniforms with gold bars on the epaulettes. Got to be at least 7 stripes for a Supervisor
