This is a very bad idea, because it could actually harm the person having the seizure. It can chip a tooth, cut their gums or even break their jaw. The correct thing to do is gently roll them to one side and put something soft under their head. Make sure they are breathing properly as well.
Epilepsy can affect people at any age. Seizure onset starts in people over age 65 as often as it does in children under 10. Though, seizures in seniors often occur due to other health problems, such as stroke and heart disease.
Although some people with severe or frequent seizures may not be able to work traditional jobs, many people with epilepsy work in business, government, the arts and a variety of other professions. Sometimes stress can be a trigger for epilepsy, but learning coping mechanisms to manage stress at work can be achieved.