All Employees: Professional and Business Services: Investigation and Security Services in California was 153.90000 Thous. of Persons in March of 2022, according to the United States Federal Reserve. Historically, All Employees: Professional and Business Services: Investigation and Security Services in California reached a record high of 155.10000 in October of 2019 and a record low of 75.50000 in January of 1992. Trading Economics provides the current actual value, an historical data chart and related indicators for All Employees: Professional and Business Services: Investigation and Security Services in California - last updated from the United States Federal Reserve on April of 2024.