Final answer:
Managers should contact the local health department when they suspect a foodborne illness outbreak.
Step-by-step explanation:
When managers suspect that a foodborne illness outbreak has occurred, they should take the action of contacting the local health department.
The local health department plays a crucial role in investigating and managing foodborne illness outbreaks. They have the expertise and resources to identify the cause of the outbreak, trace its source, and take necessary measures to prevent further spread of the illness.
By contacting the local health department, managers can ensure prompt intervention to protect public health, including implementing measures such as isolating affected employees, conducting thorough food safety inspections, and providing necessary guidance to prevent future outbreaks.