SSS covers a wide range of illnesses under its sickness benefit program, provided the member is unable to work due to medical conditions. Some common sicknesses covered by SSS include accidents, injuries, illnesses requiring hospitalization, and chronic conditions that temporarily incapacitate a person. Members who suffer from these illnesses may be eligible for cash assistance during their period of sickness, which is meant to replace lost income while they are unable to work.

To qualify for the sickness benefit, the member must meet certain requirements, such as having paid at least three months of SSS contributions in the 12-month period prior to the sickness. The member must also be confined for at least four days, either in a hospital or under the care of a physician, and must submit the necessary documents, including a medical certificate, to process the claim for sickness covered by SSS.