Job for people about 60

Hey everyone, My father is 60 years old and he had heart attack last year. Prior to that he was working in gulf. Now because of age and health issues he can't go back.

Now he's trying to get some job as shop keeper for less salary and more working hours. Myself and rest of my family don't like this, because he can't handle long working hours.

The issue is he's a type of guy who can't sit idle. He has to do some work. Few years back he had worked in a data entry company. But now even they won't hire people of this age.

He knows how to use computer, like doing basic things in Excel etc.,.

Can anyone suggest what kind of work is suitable for him? And whether is there any type of employer who will hire him?