The Illinois Supreme Court has rejected a constitutional challenge by a roofing contractor who alleged the Illinois Employee Classification Act (ECA) violates procedural due process rights and is impermissibly vague. Handed down last month — six years after the ECA’s original effective date — the high court’s decision in Bartlow v. Costigan means the ECA is here to stay.The Employee Classification Act The stated purpose of the ECA is “to address the practice of misclassifying employees …