This systematic review synthesized findings on socio-demographic characteristics of older adults who engaged in formal volunteering, types of voluntary work for engagement, and the outcomes resulting from different types of voluntary work participation. Studies published in peer-reviewed journals were identified from six electronic databases. Studies were included if they: (1) involved a study sample of adults aged 65 and older or had a mean age of 65 , (2) reported any type of formal voluntary work at any setting, and (3) reported at least one influence of voluntary work on volunteers. Older adults who were female, married, retired, and have a higher education, fair health, and more volunteering experience participated in voluntary work. The majority of older volunteers preferred to volunteer in a community setting, and they most commonly participated in healthcare or social care related voluntary work. The older volunteers perceived positive influences mostly related to health-relatedoutcomes or helping knowledge and skills.
Keywords: Older adults; systematic review; voluntary work.