A union group is an organization of workers who have joined together to protect their rights and interests. The term 'union group' can also refer to a LOCAL organization, which is a five-letter word in this crossword puzzle. LOCAL unions are typically organized around a particular industry or profession, and they work to ensure that their members receive fair wages, safe working conditions, and other benefits. They also advocate for better labor laws and regulations, and they often negotiate collective bargaining agreements with employers.