Information for 2004, 2005 and 2006-07 for the Department, its predecessor and its agencies can be found on the civil service website at:
http://www.civilservice.gov.uk/about/statistics/sickness.asp
Stress, mental health and behavioural disorders all fall within the category of ‘mental and behavioural disorders’.
For years prior to 2004, sickness absence data is not available in the form requested and could be provided only at disproportionate cost.