If you are NOT ABLE to go to the SSS or to your bank in person because of a medical condition, you ask your representative to submit certain documents to the SSS.
So that you will continue to get your pension year after year, you need to make a personal appearance at the nearest SSS branch or at your bank once every year, weeks before your birth month, to prove to the SSS that you are still ALIVE.
See ACOP Form (02-2013) below
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Annual Confirmation of Pensioner's Form (ACOP) - Pensioner's Reply