How to live happily with mum and dad - one family's story
19 December 2013 Last updated at 00:17 GMT
As more young adults struggle to find work they are having to live at home with their parents.
This arrangement is not unusual in countries such as Spain where it is quite traditional.
So what are the secrets of a harmonious home life when you are grown up and living in the hotel of mum and dad?
Tom Burridge met one family in Madrid.