labor union
US /ˈleɪbər ˌjuːniən/
UK /ˈleɪbər ˌjuːniən/

1.
sindicato
an organized association of workers formed to protect and further their rights and interests; a trade union.
:
•
The workers decided to form a labor union to negotiate for better wages.
Los trabajadores decidieron formar un sindicato para negociar mejores salarios.
•
Membership in a labor union can provide job security and benefits.
La membresía en un sindicato puede proporcionar seguridad laboral y beneficios.