Dee Simpson has thirty plus years of experience lobbying the Texas Legislature on a wide variety of issues, including public workers, civil rights, worker's rights, sustainable technology, toxic contamination, voting rights, municipal, criminal indigent defense, and other local government initiatives. In addition, Mr. Simpson has over forty  years of advising/ working in legislative and other campaigns on behalf of certain public policy initiatives.

Through his professional career, his main individual employers have been: 

American Federation of State County and Municipal Employees, AFL-CIO

Texas Rio Grande Legal Aid

National Center for Appropriate Technology

Fort Worth Community Action Agency

Catholic Charities, Diocese of Fort Worth

Texas Christian University