Full-time staff in the Department are contracted to work 41 hours gross per week (36 hours net per week) in London and 42 hours gross per week (37 hours net per week) outside London. Around 10 per cent. of the Department's staff work part-time, and are contracted to work fewer hours than their full time colleagues. The Department does not record actual hours worked by employees. However the Department's 2007 staff survey, which was completed by well over half of staff, suggested that 25 per cent. of staff worked contracted hours, 45 per cent. worked one to five hours in excess of contracted hours, 19 per cent. of staff six to 10 hours in excess and 11 per cent. of staff more than 10 hours in excess.