Officials at the Public and Commercial Services Union have warned MPs that the CSA's new IT system is causing "significant problems" for customers and staff. Designed to help implement the government's child support reforms, the system went live earlier this year, nearly 12 months behind schedule.
The Work and Pensions Select Committee recently asked to examine the government's contract with supplier EDS but the DWP would only provide this with the "commercial in confidence" parts taken out.
A new sub-committee will now scrutinise IT initiatives at the department, which oversees the CSA. Select committee member Rob Marris hopes the sub-committee will gain greater access.
"It may be that, with a limited number of members in a private session, we will be allowed to see more documents than we would see as a full committee in public session," he said.
Without this access, it would be difficult to see who is responsible for the ongoing problems at the CSA, he added.