As software evolves from version to version, it often becomes more streamlined, easier to use, and more intuitive to put to work. Since employee salaries are a major portion of business expenses, upgrading software is synonymous with investing in employee productivity.
As a simple example, suppose that upgraded software saves one hundred employees twenty minutes of work per day per employee. Over the course of a 250-day work year, that amounts to an increased productivity of 500,000 minutes or about 8,333 hours per year. That is the equivalent of over four full-time employees. Suddenly, the justification for upgrading software becomes more apparent from an economic standpoint.