A recently-published report by researchers from Pitt and USI found that daylight saving time reduces sleep duration by an average of 19 minutes in the US, and that this harms people's health and workers' wages. The researchers used CDC and US Census data to compare behavior on the western and eastern sides of time zone boundaries, and reported that individuals using daylight-saving time are 11% more likely to be overweight and 5.6% more likely to be obese. On average their wages are 3% lower. Effects are strongest on those with early work schedules. The researchers give the following bounds for the US annual economic costs of these effects: $2.35 billion ($82 per capita) for increased healthcare costs, and $612 million ($23 per capita) for worker productivity losses. These are lower bounds: actual costs are most likely higher. Costs are in 2017 dollars. Giuntella G, Mazzonna F. Sunset time and the economic effects of social jetlag; evidence from US time zone borders. J Health Econ. 2019. https://doi.org/10.1016/j.jhealeco.2019.03.007 (draft: https://pdfs.semanticscholar.org/3dd9/bf55292c1396a912b82c736ea3485dd5b884.p...) A summary can be found in: Ingraham C. How living on the wrong side of a time zone can be hazardous to your health. Washington Post. 2019-04-19 06:00 -04. https://www.washingtonpost.com/business/2019/04/19/how-living-wrong-side-tim...