Here is the 2011 list of happiest countries in the world including Denmark, Canada, Norway and Netherlands.
Denmark
Almost 90% of Denmark people feel satisfied with their life. Averagely, residents here spend only 30 hours to work a week and 16.3 hours a day (approximately 68% of their day) to their leisure and personal care. The southernmost and modestest of the five Nordic is also ranked as 19th safest country in the OECD. In Denmark, most of its services are free to the citizens despite the highest income tax bracket in the world. Also, Denmark people travel in one of the best public transport systems in the world.

Denmark
Canada
People satisfied with their life: 78%
Average weekly work hours: 32.7

People in Canada spend 15 hours a day to their personal care and leisure
Norway
People satisfied with life: 84%
Average weekly work hours: 27.05

Norway is ranked the eighth safest country in the OECD
Netherlands
People satisfied with life: 91%

People in Netherlands, the 25th safest country in the world, has 16.1 hours devoted to themselves
Switzerland
People satisfied with life: 77%
Average weekly work hours: 31.54

People in Switzerland has 15.7 hours dedicating for entertainment and personal care
Australia
People satisfied with life: 75%
Average weekly work hours: 32.5

In the fourth safest country, Australia, people have 15.1 hours for their leisure and personal affair
Sweden
People satisfied with life: 83%
Average weekly work hours: 31

Besides over 5 hours working in a single day, people in Sweden devote 15.5 hours of their day for the entertainment and hobbies
Finland
People satisfied with life: 86%
Average weekly work hours: 31.8

Despite having homicide rate of 2.5 murders per 100,000 inhabitants, Finland manages to make the top eight thanks to the fact that people spend 16 hours on their own each day
Denmark happiest place on earth
Related links:
The happiest places to live in the world
Namibia and South Africa: World’s Most Unequal Countries 2011
World’s Happiest Countries 2011