(a) This section is applicable whenever benefits are being paid for permanent total disability benefits arising under subdivision (d), (m) or (n), section six of this article or under section eight-c of this article. This section is not applicable to the receipt of temporary total disability benefits, the receipt of permanent partial disability benefits, the receipt of benefits by partially or wholly dependent persons or to the receipt of benefits pursuant to the provisions of subsection (e), section ten of this article. This section is not applicable to the receipt of medical benefits or the payment for medical benefits.
(b) Whenever applicable benefits are paid to a beneficiary with respect to the same time period for which payments under a self-insurance plan, a wage continuation plan or a disability insurance policy provided by an employer are also received or being received by the beneficiary, the applicable benefits shall be reduced by these amounts:
(1) The after-tax amount of the payments received or being received under a self-insurance plan, a wage continuation plan or under a disability insurance policy provided by an employer if the employee did not contribute directly to the plan or to the payment of premiums regarding the disability insurance policy; or