1. Economic or social activity that operates outside formal institutional structures, regulations, and official record-keeping
Many people in developing countries rely on informal activities for their income.
Muitas pessoas em países em desenvolvimento dependem de atividades informais para sua renda.
2. Work or business conducted without legal registration, formal contracts, or compliance with labor regulations
Street vending is considered an informal activity in most cities.
A venda ambulante é considerada uma atividade informal na maioria das cidades.
3. Casual or unstructured social engagement outside formal organizations
Informal activities among friends help build stronger communities.
Atividades informais entre amigos ajudam a construir comunidades mais fortes.