The document outlines significant changes from December 2015 regarding regulations from the EEOC, IRS, DOL, and HHS, particularly related to the Affordable Care Act (ACA). Key updates include guidance on employer-sponsored coverage, requirements for health reimbursement arrangements, adjustments to affordability standards for employer mandates, and the extension of reporting deadlines for ACA-related forms. Additionally, the Consolidated Appropriations Act of 2016 introduces provisions delaying the implementation of the 'Cadillac tax' and creating parity for employer-provided transit and parking benefits.