SPRINGFIELD — Sexual harassment, retaliation and discrimination in the workplace happens much too often, according to Bridget Duignan.A passion to change that culture led the Latherow & Duignan partner to write a comprehensive part of a bill — known as the Workplace Transparency Act — which was recently signed by Gov. J.B. Pritzker.The measure will apply to all workplace contracts, agreements, clauses and waivers that are modified or extended on or after the effective date of Jan. 1.It restricts …