From boats to bikes: Japan's last craftsmen families
2 July 2014 Last updated at 06:43 BST
Throughout history, businesses have been handed down through generations.
And in some cases they stay in the same family for hundreds of years.
But how do they adapt and survive?
The BBC's Rupert Wingfield Hayes meets the last in a long line of craftsmen in Japan, who has transferred his skills from building boats to producing bicycles.