ATCs should be hard restricted to 8 hour shift maximums, with a hard enforced 16 hours off. No 'if’s, 'and’s, or ‘but’s, about it. They get 8 hours of work and 16 hours of rest.
Airlines and Airport Operators alike should be required to pitch in to find and secure these professionals’ stable jobs, shifts and ensure their function is at it’s peak.
ATC is no joke. If you aren’t clear headed and alert; you will make mistakes and that can end in tragedy. Regulations must be in place to prevent these folks from getting overworked to the point they become dangerously fatigued; much like we do with Commercial Drivers.