Final answer:
For an employee who is terminated after working 13 years, the required notice period could be 60 days if the company has over 100 employees and is going through plant closings or major layoffs. The exact notice required may vary; hence, checking the employment contract is crucial.
Step-by-step explanation:
If an employee has worked for 13 years and is being terminated, the amount of notice they are legally entitled to may vary depending on the country's labor laws, collective agreements, or individual employment contracts. However, based on the information provided, employers with more than 100 employees are required to provide written notice 60 days before plant closings or large layoffs. It is important for the employee to review their employment contract or consult with a labor law expert to understand their specific entitlements. It is also good practice for employees to give at least two weeks of notice when voluntarily leaving a position, unless their contract specifies a different period.