Under “workers’ compensation,” enacted in 1914, workers would give up their right to sue employers for injuries and in return, employers would be obligated to pay for medical care and provide cash benefits while disabled employees recuperated. Today, work comp, as it’s dubbed, is a huge program – well over $20 billion a year – whose operating rules are a source of perennial political jousting. . . . However, it still left California employers with – by far – the nation’s highest work comp burden. The 2016 annual survey of costs by the Oregon Department of Consumer and Business Services kept California in the No. 1 spot with an average cost of 3.24 percent of payroll for work comp insurance, 76 percent above the national average. Obviously, working in California is not inherently more dangerous than in other states, and cash benefits to disabled California workers are not out of line, so the enormous cost differential must be rooted in the system itself, which explains why its rules are the subject of constant political infighting. One factor in those costs is what officials say is an enormous amount of fraud, concentrated in Southern California. Last year, the Center for Investigative Reporting reviewed work comp fraud cases that had been prosecuted and reported that they totaled more than $1 billion. But authorities believe that prosecutions merely are the tip of the iceberg.