1. organized into or belonging to a labor union
Usage: British spelling

Examples

• The factory workers are fully unionised and negotiate collectively for better wages.
• Unionised employees typically receive better benefits than their non-union counterparts.
• The company faced resistance when trying to expand into heavily unionised regions.
• Teachers in this district are unionised and have strong job protections.
• The construction industry remains highly unionised in many countries.
• Unionised workers went on strike to protest the proposed pay cuts.