Creatinine levels relate to both muscle mass and to kidney function. As you age, your muscle mass decreases but your kidneys tend to function less effectively. The net result is not much change in creatinine levels in the blood as you get older.
As a result, California employers are required by law to have workers' compensation insurance, even if they have only one employee. And, if your employees get hurt or sick because of work, you are required to pay for workers' compensation benefits.
California provides paid time off for parenting and pregnancy leave. California is one of the few states that has a short-term disability insurance (SDI) program for employees. Many people refer to this program as temporary disability insurance (TDI); in California, it's the same thing. Employees fund the short-term disability program through payroll deductions and can receive benefits when they are temporarily unable to work due to disability, including pregnancy.