Now that President Obama has been reelected, it appears the Patient Protection and Affordable Care Act, better known as Obamacare, is here to stay. And as annual open enrollment ­periods get underway at many companies, both employees and employers face changes in health insurance coverage and requirements over the next two years.

In Massachusetts, implementation of the ­federal health care law could be more complex and confusing because of the state’s own universal health care law. While the laws are similar — Obamacare is based on the Massachusetts system adopted under former governor Mitt Romney — they have conflicting provisions. How those conflicts might be resolved remains unclear.