ADA Staff Home / ADA Staff Share: HR & PAYROLL ADA Staff Visit Website 2600 S. Gessner Suite 204 Houston, TX 77063 (346) 327-9100 www.adastaff.com Hours: 8am - 5pm Monday Thru Friday About Map About Professional Staffing and Recruiting What's Nearby? Distance: 5 10 15 20 25 50 mi.