Management (specifically Arizona office)
Culture (specifically Arizona office)
Internal politics (specifically Arizona office)
Toxic work environment, which won't change in the foreseeable future (specifically Arizona office)
If the theme hasn't been clear, selling any of ADP's HR/BPO solutions could be a fun, lucrative career. Just make sure you aren't working in the Chandler or Tucson office. If that's not an option, I would recommend looking at other business units like Majors, SBS, Retirement Services, etc...