Does a contractor need to meed all or any one of those 20 points? How does this relate to contractors hired trough oDesk or Elance? I see number of points the

Does a contractor need to meed all or any one of those 20 points? How does this relate to contractors hired trough oDesk or Elance? I see number of points they would meet, for example Payment by Hour, Right to Discharge, Oral or Written Reports etc.