It is our mission to promote and preserve free enterprise with integrity; through superior education, safety, political action, business development and career opportunities in the construction industry. ABCIL was established in 1975. We aggressively promote and protect the free enterprise system and the Merit Shop Philosophy. ABCIL- Is a construction trade association representing over 400 member companies involved in the commercial and industrial construction markets in Illinois.- Is one of 70 chapters of the national Associated Builders and Contractors, Inc. (ABC), one of the most influential trade associations in the United States.- Is the only construction association that unites the entire construction team to work together for their own mutual benefit and the construction industry.