Union Transparency and Accountability Act This bill amends the Labor-Management Reporting and Disclosure Act of 1959 to (1) require labor organizations to file certain disclosure forms detailing expenditures of union dues, (2) impose civil fines on labor organizations that fail to file required disclosures, and (3) make it unlawful for any labor organization to discharge or discriminate against any employee who has filed a whistle-blower complaint or who is testifying in a disclosure proceeding.