The purpose of this research is to examine whether the concept of customer lifetime value and customer equity in marketing research field can be applied to management of human resource utilization. This concept in marketing is aimed at contributing to management that keeps the balance between the two segments of acquiring new customers and retaining existing customers optimally. The background behind this idea that customers who have the greatest value to bring to the enterprises during the period of maintaining relationships should be evaluate. In this paper, we applied this to the field of hiring and training companies. Hiring recruitment of new talent and prevention of employee separation from work were not planned unintentionally but we thought that companies should be strategically implemented with the aim of maximizing the value that they bring. Then we presented a mathematical model. These are quite simple models, and there is still much room for improvement. We will utilize it as a base for future development of this research.