Changes to the Program are made consistent with the Act. Shared-Work is available only to permanent employees, and part-time employees may participate. If an employer reduces benefits to employees who are not Shared-Work participants, the employer may also reduce benefits for Shared-Work participants. Other changes include requiring employers to estimate the number of layoffs that would have occurred absent shared work. For weeks of benefits paid for the three-year period between July 1, 2012, and June 28, 2015, the amount of shared work benefits reimbursed by the federal government are not charged to the experience rating accounts of contributing employers or to reimbursable employers.