As a matter of fact, the effectiveness of any HRM system is a crucial, strategic indicator to determine the real value of the investment and quality of results, and visualize the relation costs - benefits. For public sector organizations it is a must, as it involves public resources, quality of expenditure, and transparency. There is an article about the use of these systems in Zimbabwe which might be useful:
Strategic Human Resources Management for Public Sector Entities in Zimbabwe: Needs, Scope and Possibilities | SpringerLink