A shorter working week could help the UK's "exhausted" workforce and boost the economy, a new report argues.
Think tank Autonomy said its research suggested there was no correlation between long working hours and productivity.
Germany is more productive but workers have fewer hours on average than the UK, while Mexico and Greece are less productive but work significantly more than workers in Britain, the study indicated.
Cutting the working week would also reduce the UK's carbon footprint through less commuting, said the report.
The think tank made a series of recommendations, including using the public sector as an "innovator" in adopting a shorter working week without a reduction in pay...