For an EASA (European Aviation Safety Agency) Class 2 medical certificate, the validity period depends on the age of the pilot at the time of the examination:

• Under 40 Years Old: A Class 2 medical certificate is valid for 60 months (5 years). A medical certificate issued prior to the license holder reaching the age of 40 shall cease to be valid after the license holder reaches the age of 42.
• Between 40 and 50 Years Old : A Class 2 medical certificate is valid for 24 months (2 years). A medical certificate issued prior to the license holder reaching the age of 50 shall cease to be valid after the license holder reaches the age of 51.
• Over 50 Years Old: A class 2 medical certificate is valid for 12 months.

After the validity period expires, pilots need to undergo a new medical examination and obtain a renewed medical certificate to continue exercising the privileges of their EASA license. It's essential for pilots to maintain their medical certificates current to ensure compliance with EASA regulations and to be able to continue flying legally. However, regulations can change, so it's always a good idea to verify the latest requirements with the appropriate aviation authority.