Automatic Data Processing

ADP, LLC., is an American provider of human resources management software and services. ADP was formerly one of four American companies to get a AAA credit rating from Standard & Poor's (S&P) and Moody's, but S&P and Moody's downgraded ADP to AA in April 2014, after the dealer services unit spin off.

Automatic Data Processing

ADP, LLC., is an American provider of human resources management software and services. ADP was formerly one of four American companies to get a AAA credit rating from Standard & Poor's (S&P) and Moody's, but S&P and Moody's downgraded ADP to AA in April 2014, after the dealer services unit spin off.