Find out in the latest Edenred-Ipsos Barometer survey
Ipsos interviewed over 14,000 workers in 15 nations in January 2016. At the top of the ranking were American employees followed by those in China. Issues considered include the work environment, appreciation and emotion. This involves consideration of motivation and the impact of HR policies. The report contains a methodology.
Also in 2016 Indeed ranked 35 nations and cities. See if their findings differed and remember to consult the methodology used!
For more in-depth findings
The CIPD conducts regular surveys of British workers . There are questions in the Employee Focus about job satisfaction.
The National wellbeing survey has questions on job satisfaction. In 2016 this recorded (78.0%) adults aged 16 and over in the UK somewhat, mostly or completely satisfied with their job. The Department of Work and Pensions also conducted earlier surveys on health and well being at work.
On an EU wide scale try searching the European Foundation for the Improvement of Living and Working Conditions for recent national and comparative reports and surveys.
The annual survey from the Society for Human Resource Management. covers employee engagement in the USA.
Finally you might want to consider if work is good for your health in this 2006 UK government report.