KAN IMMIGRATION SERVICES on Instagram: "Avoid This PGWP Mistake | Medical Rule You Must Know If you plan to work in healthcare or education, you must complete a valid medical exam before or during your work permit process. Without a recent medical, your work permit can come with a condition that blocks you from working in these sectors. Medical results are usually valid for 12 months. If your work permit is still in process and you have not done medicals, do them immediately and submit the proof