The answer to that question is: Probably not.
The health insurance you get through your your employer is partly paid by your employer. You are not paying the full cost even though it might seem expensive to you. But when you sign up for a health insurance plan though either your state or federal exchange, you will be paying the whole thing unless you qualify for a subsidy.
The subsidies are the big unknows at this point. When you apply for insurance on the ObamaCare exchange, you will have to provide a variety of information including information on the health plan you have at your workplace. If the plan you currently have is deemed “affordable”, you will NOT be eligible for any tax credits (subsidies). Unfortunately, since your employers is paying for part of your plan where you work, chances are that it will fall into the “affordable” category.
Another thing to consider is the tax advantage of being able to get a tax break which you will not be able to claim if all you have are wages from your employer and go with health coverage through an exchange.
ObamaCare was set up to help provide insurance to those who don’t have anything at all. Many experts believe it will in the end result in higher costs for everyone. That is why it is unlikely that you will be able to find cheaper coverage through your state health marketplace than you already have at work.