Lots of questions here! Don't have much to offer related to 'tracking and paperwork, but related to hire/retention of your CNAs: We use "Behavior-Based Interviewing" for all applicants at our hospital and find it very useful. I'm sure if you do a Google search you can find lots of information on this in business/organizational literature. We feel it really helps identify the best applicants. Then to retention -- nothing is more worth the resources than a competency-based quality orientation program. Then, ongoing continuing education offerings to continue their development. Eventually you might also consider a 'clinical ladder' for your assistive personnel. Good luck!