How to Say "trade union" in Spanish
The Spanish word for “trade union” is “sindicato” — B1 level. This is a very common word in everyday Spanish.

Examples
El sindicato convocó una huelga para protestar por los despidos.
The union called a strike to protest the layoffs.
Todos los trabajadores de la fábrica se unieron al sindicato.
All the factory workers joined the union.
El presidente del sindicato dio una rueda de prensa.
The president of the union gave a press conference.
Gender Check
Although many Spanish words ending in -a are feminine, 'sindicato' ends in -o and is always masculine: 'el sindicato' (the union).
Confusing Noun and Adjective
Mistake: “Using 'sindical' (the adjective) when you mean the organization. E.g., 'El sindical es fuerte.'”
Correction: Use the noun: 'El sindicato es fuerte.' ('Sindical' is only used to describe something related to the union, like 'actividad sindical' - union activity.)
Related Translations
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