Teacher shortage prompts calls for retirees to return to Ontario classroom. In fact the College has recently sent out invitations to its members to invite them to apply to teach young kids in Ontario. 

"In short, you are needed. Your significant and specialized knowledge and skills are needed," said the letter.

source: https://ottawa.ctvnews.ca/ontario-college-of-teachers-asks-retired-teachers-to-return-to-the-classroom-to-address-teaching-shortage-during-pandemic-1.5118619