But the ACA changed all that. Medical underwriting is no longer used, although applicants can now only enroll during open enrollment or a special enrollment period triggered by a qualifying event (similar to how enrollment works for employer-sponsored plans). Essential health benefits are now covered on all new individual major medical plans in every state. And millions of people are receiving premium subsidies that cover the majority of their premiums for plans purchased in each state’s health insurance exchange (the ACA’s consumer protection reforms apply to plans sold outside the exchanges as well, but the subsidies are only available in the exchange). The ACA also limits the percentage of premiums that insurers can use for administrative costs, including profits and executives’ salaries; insurers have refunded billions of dollars to consumers as a result of the new rules.
According to a Kaiser Family Foundation analysis, in 2018, the average American worker with employer-sponsored health insurance contributed $1,186 for a single employee health plan and $5,547 for a family health plan. Since this is an average, some employees may be paying much more (employers paid the bulk of the total premiums, which averaged $6,896 for single employees and $19,616 for family coverage).
A good place to start is HealthCare.gov. This is the health insurance exchange created by the The Patient Protection and Affordable Care Act, and is a one-stop shop for private individual market health insurance plans (note that the exchange itself is run by the government, but the health plans for sale in the exchange are all private, from the health insurance companies with which you're already familiar). People in 39 states use HealthCare.gov to enroll in individual market plans. The other 11 states and the District of Columbia have state-run exchanges, and you'll be directed to their sites from HealthCare.gov when you select your state.
How do the benefits differ? What would you owe in out-of-pocket costs if you were to be injured or get seriously ill? How does that compare with your out-of-pocket exposure on the employer-sponsored plan? Are your doctors in the network of the individual plan? You'll want to carefully consider all of these things before switching, and keep in mind that you won't be able to rejoin your employer's plan until the next open enrollment window offered by your employer.