CBP data indicates that there are more establishments categorized as health care and social assistance businesses with 500 or more employees in California than in any other category.
The following table shows how many construction of buildings with 500 or more employees were in California during the period from 2012 to 2016.
Construction of buildings with 500 or more employees in California (2012-2016)
Year
Total businesses
2012
192,052
2013
196,559
2014
200,846
2015
206,286
2016
210,469