How many days notice is given to the Union upon modification of testing groups?

The correct answer is 30 days because it aligns with common labor agreements that typically require a notification period to allow for adequate preparation and response from the Union. Providing a 30-day notice ensures that all parties involved have enough time to address any concerns regarding modifications to testing groups, which can potentially impact the members' interests and procedures. It reflects a balance between organizational needs and the rights of the employees, ensuring transparency and effective communication between the administration and the Union. Additionally, this timeframe is often seen as reasonable in labor relations, allowing for thorough discussions and adjustments as needed.