Premier InfoSource A major provider of employment screening and drug testing services to employers nationwide. P.O. Box 673385 Marietta, GA 30006 Phone: 770-419-8860 Phone: 800-557-2220 Employment Verification Guide.com pages: Employee screening verification companies - go to our background check homepage. List of pre employee screening verification firms - list of some investigation companies. Background search Services by state - find a background search company near you. Contact this site - where to send us your email. Pages map - see a list of this web site's pages. Information - find more background checks related sites of interest to visit. Privacy policy and site use info - use of site and privacy policy info notice. copyright© employment verificationguide.com All rights reserved.