Welcome to the Association leader in the Construction Industry. The Great Lakes Construction Association (GLCA) is your guide to the most viable information concerning the Commercial Construction Industry in Illinois! As a member of the GLCA you and your employees remain relevant to what is happening in the industry, stay abreast of current trends, and have a voice in Government Affairs at the state and local level with others in our industry. The GLCA is an Association that promotes union construction and growth in Illinois. We pride ourselves on excellent customer service to our members. We are here to serve your needs, answer your questions and supply you with the most up-to-date information available in the industry. Through our Safety & Education training programs and our Government Affairs & Labor Relations updates the GLCA will provide you with the tools you need to make sound decisions for your business.