If there are any Canadians in this forum could you let me know the law when reporting sexual abuse?

I realize under the law if you have a suspicion that sexual abuse may be taking place you are to report it.
But given an act that occurred years ago and the abuser currently being in a position of power are you still required to report this?
"I wish I could show you when you are lonely or in darkness the astonishing light of your own being." ~ Hafiz

“At the centre of your being you have the answer; you know who you are and you know what you want.” ~ Lao Tzu