Employee management software earns its place in daily operations when an employee request reaches the right person, the approved change takes effect at the right time, and the remaining work gets finished. Its workflow role is to connect those steps. A stored record can tell HR who an employee reports to; a well-designed approval process helps HR change that reporting line without losing the tasks that follow.
Consider a transfer to another department. The manager may approve it, but HR still needs to confirm the effective date, IT may need to adjust access, and payroll may need updated information. Treating the approval as the finish line leaves those handoffs to email and memory. Tracking the whole request makes unfinished work visible before it becomes an employee problem.