subject: HR Studies and HR Training for Employee Retention [print this page] In summary one might as the question, "why is it important for employees to progress in the relationship chain" Think of it as a geometric progression of retention. If the people in the first stage have an average retention variable of X, then in the second stage the average retention is 2X, and the top stage is 4X. You can get a more in depth look at these topics through various HR studies and HR training programs.