[26 Year Gap]

That is why I suggested putting it under certifications, professional designations, etc. That elevates it from the "hobby" category. It could even be under "civic" with things like planning commission, zoning board, etc. But, think about it for a moment. If you put down referee or officiating as a hobby or personal interest, it can only serve as an eliminator. If you put down a designation or certification, it can be a conversation starter. You can relate how you handle difficult situations, are detail oriented by having to know the rules, can show how you have people skills that can translate into the workplace, etc. In other words, it is a training ground that uses many skills that can help an individual become an even better employee.