Section 13-A. Permanent Disability Benefits.—

1. Upon the permanent total disability of a member who has paid at least thirty-six (36) monthly contributions prior to the semester of disability, he shall be entitled to the monthly pension: Provided, That if he has not paid the required thirty-six (36) monthly contributions, he shall be entitled to a lump sum benefit equivalent to the monthly pension times the number of monthly contributions paid to the SSS or twelve (12) times the monthly pension, whichever is higher. A member who (1) has received a lump sum benefit; and (2) is reemployed or has resumed self-employment not earlier than one (1) year from the date of his disability shall again be subject to compulsory coverage and shall be considered a new member.

2. The monthly pension and dependents’ pension shall be suspended upon the reemployment or resumption of self-employment or the recovery of the disabled member from his permanent total disability or his failure to present himself for examination at least once a year upon notice by the SSS.

3. Upon the death of the permanent total disability pensioner, his primary beneficiaries as of the date of disability shall be entitled to receive the monthly pension: Provided, That if he has no primary beneficiaries and he dies within sixty (60) months from the start of his monthly pension, his secondary beneficiaries shall be entitled to a lump sum benefit equivalent to the total monthly pensions corresponding to the balance of the five-year guaranteed period excluding the dependents’ pension.

4. The following disabilities shall be deemed permanent total:

   1. Complete loss of sight of both eyes;

   2. Loss of two limbs at or above the ankle or wrists;

   3. Permanent complete paralysis of two limbs;

   4. Brain injury resulting to incurable imbecility or insanity; and

   5. Such cases as determined and approved by the SSS.

5. If the disability is permanent partial, and such disability occurs before thirty-six (36) monthly contributions have been paid prior to the semester of disability, the benefit shall be such percentage of the lump sum benefit described in the preceding paragraph with due regard to the degree of disability as the Commission may determine.

6. If the disability is permanent partial and such disability occurs after thirty-six (36) monthly contributions have been paid prior to the semester of disability, the benefit shall be the monthly pension for permanent total disability payable not longer than the period designated in the following schedule:

   Complete and permanent loss of/use of	Number of Months
   One thumb	10
   One index finger	8
   One middle finger	6
   One ring finger	5
   One little finger	3
   One big toe	6
   One hand	39
   One arm	50
   One foot	31
   One leg	46
   One ear	10
   Both ears	20
   Hearing of one ear	10
   Hearing of both ears	50
   Sight of one eye	25

7. The percentage degree of disability which is equivalent to the ratio that the designated number of months of compensability bears to seventy-five (75), rounded to the next higher integer, shall not be additive for distinct, separate and unrelated permanent partial disabilities, but shall be additive for deteriorating and related permanent partial disabilities, to a maximum of one hundred percent (100%), in which case, the member shall be deemed as permanently totally disabled.

8. In case of permanent partial disability, the monthly pension benefit shall be given in lump sum if it is payable for less than twelve (12) months.

9. For the purpose of adjudicating retirement, death and permanent total disability pension benefits, contributions shall be deemed paid for the months during which the member received partial disability pension: Provided, That such contributions shall be based on his last contribution prior to his disability.

10. Should a member who is on partial disability pension retire or die, his disability pension shall cease upon his retirement or death.