Who We Are... For over 20 years, Service Contract Administrators, Inc. has provided Third Party Administration services to prevailing wage employers and associations from their headquarters in Columbus, Ohio. SCA, Inc. administers prevailing wage fringe benefits for hundreds of employers and thousands of employees across the country. What We Do... SCA, Inc. helps Prevailing Wage employers increase their competitiveness, grow their businesses and win more jobs. We provide top-notch customer service to employee participants and employers alike. SCA, Inc. administers one of the largest association sponsored Supplemental Unemployment Benefit Plans in the country, the PWCA SUB Plan, which provides valuable income replacement for employees experiencing involuntary work stoppages.