Example of a 3‐Month Look‐Back Period to Determine Full‐Time Status This is for informational purposes only and is not a substitute for legal advice. Revised April 2013 The employee worked a total of 393 hours during the 3‐month look‐back period, which averages to 131 hours per calendar month. Since the employee has an average of at least 130 hours of service per calendar month, they are considered a full‐
time employee for the purposes of the Affordable Care Act.