3.5.2 The DCS' vacancy rate showed an increase from 3,3% in 2011/12 to 4,1% in 2012/13. The highest number of vacancies were reported in relation to psychologists, social work and related professions, educationists and professional nurses. Of concern is that after resignations, retirement and expired contracts were the biggest contributors to the high number of vacancies. The Audit Committee had also raised serious concerns about long standing vacancies particularly in relation to the internal audit unit: at the time of reporting both the Deputy Commissioner: Internal Control Compliance, and the Chief Audit Executive posts had been vacant, the latter for longer than five months.