United Kingdom, Jan. 5 -- Henry Winkler believes retirement would be "deadly".

The Happy Days star admitted he is often asked if he is ready to give up working now he is 80 but he will only do so when he is physically "not able to do" it anymore.

Speaking to Michelle Obama and her brother Craig Robinson on their IMO podcast, he said: "People keep asking me, am I gonna retire or 'Have you retired?'

"And I think that is like the furthest thing from my imagination.

"I will retire when I am not able to do [this] more.

"I think that [retirement] is deadly."

The Barry actor is pleased he is still keeping busy.

He said: "I work a lot. I have several jobs."

Henry's History Channel documentary series Hazardous History - which looks into pr...