A survey from IT recruitment firm InterQuest found one in three companies is reporting redundancies - a rise of 20% since February.
However, just over half of IT staff (52%) believe IT is more secure than other industries.
Gary Ashworth, executive chairman at InterQuest, said: "No sector is immune from economic fluctuation but any downturn in IT is likely to be temporary. IT is at the very heart of businesses - companies simply can't survive without it and this survey demonstrates that IT professionals understand this point."
IT staff are increasingly concerned about their jobs
Over half of IT contractors are worried about their job compared to just 12% in February.
