If you’re dreading summer on the job this year, you’re not alone. Every month last summer was the most scorching on world record. Trapped under heat domes, dozens of metro areas busted their longest streaks ever of highs over 100 degrees. Phoenix afternoons were over 110 for a month straight. On asphalt yards nearly hot enough to melt, bonus-hungry managers forced workers to keep up the usual pace. The results were lethal. In 2022, the latest year for which we have data, 43 U.S. workers lost their lives to heat on the job.