1. Work or labor performed by a person of their own free will, without monetary compensation
She dedicated two years to voluntary service in rural communities.
Ela dedicou dois anos ao serviço voluntário em comunidades rurais.
2. Organized program or period of unpaid service, often for social, community, or military purposes
The national voluntary service program trains young people for civic engagement.
O programa de serviço voluntário nacional treina jovens para o engajamento cívico.