Employers with 50 or more employees must offer health benefits to employees who work, on average, at least 30 hours per week or they may be liable for a penalty. Check with your employer/human resources department to find out if your hours worked over the year meet this threshold. If your hours vary during the year, your employer may have some options in determining your status as a full-time or part-time worker. Your employer can tell you whether you are a full or part-time worker. (26 U.S.C. § 4980H).
On Private Health Insurance Coverage & The Health Insurance Marketplace