Private efficiency of wage rigidity has taken centre stage in economics. Measuring its effects has proven elusive for lack of actual wage data. Using a unique confidential labour contract-level dataset matched with firm-level high-frequency asset prices, we find robust evidence that firms’ stock prices and employment fluctuate more in response to monetary policy announcements, the higher the degree of wage rigidity. Hand-collected information on the periods across renegotiations of collective bargaining agreements allow us to construct an accurate and predetermined measure of wage rigidity. We find that the amplification induced by wage rigidity is stronger for firms with high labour intensity, low profitability, and a large share of workers with more rigid contracts.

We conduct two survey experiments to study which information people choose to consume and how it affects their beliefs. In the first experiment, respondents choose between optimistic and pessimistic article headlines related to the COVID-19 pandemic and are then randomly shown one of the articles. Respondents with more pessimistic prior beliefs tend to prefer pessimistic headlines, providing evidence of confirmation bias. Additionally, respondents assigned to the less preferred article discount its information. The second experiment studies the role of partisan views, uncovering strong source dependence: news source revelation further distorts information acquisition, eliminating the role of priors in article choice.