What is a requirement for employees working in secure areas of O'Hare?

Having an O'Hare Badge is a fundamental requirement for employees working in secure areas of O'Hare. This badge serves as a form of identification that ensures only authorized personnel have access to restricted areas. It signifies that the employee has undergone the necessary background checks and training to maintain safety and security standards at the airport. The badge not only helps in identifying employees who are allowed to be in secure zones but also plays a critical role in enhancing the overall security protocols of the airport environment.

The other options do not accurately reflect the requirements for working in secure areas. While uniforms may be encouraged for certain positions for professionalism and identification, they are not universally required for access to secure areas. Similarly, having a college degree or being of a specific age, such as 30 years old, are not standard requirements related to security clearance and access within the airport. The focus is primarily on the possession of the O'Hare Badge to ensure compliance with security regulations.