The middle-management ranks of public sector banks are being thinned by retirements. In addition, they need experts in specific areas like project evaluation and risk management. At the same time, banks have to reduce bloated cost structures. All public sector entities across the world tend to pay more than the private sector to lower level employees, and less than the private sector to higher level employees. This makes it hard for them to attract top talent, but makes it easier to attract good people at lower levels.