Third-party reporting and employers' tax withholding are powerful compliance mechanisms, as long as the employer and employee do not collude to evade. Using data from randomly assigned on-site audits among 2,462 Norwegian firms, we provide evidence of collusive tax evasion. We find that firms...

People in the Nordic countries of Denmark, Finland, Iceland and Sweden work more than the countries’ high tax rates would lead us to predict. This observation is explained by a shared belief system that emphasises women’s rights to labour market participation.