The CalSIM model is a tool developed by the UC Berkeley Center for Labor Research and Education and the UCLA Center for Health Policy Research to estimate the impact of the Affordable Care Act on employer decisions to offer insurance coverage and individual decisions to obtain coverage in California. The model simulates various factors affecting individual and firm decisions, including changes in types of coverage, sources of coverage, and income of exchange subsidy eligible Californians. The model also compares the base scenario and enhanced scenario, which consider different policy changes. The results show that the ACA has led to an increase in the percentage of Californians under age 65 with insurance, and that exchange subsidy eligible Californians have taken up more subsidized exchange coverage. The model provides valuable insights into the potential impacts of the ACA on the insurance market in California.
