I'm not talking about hiring from a pool, but rather establishing permanent employees of the public service who, as employees, may go to different ministries to fulfill the similar function. So a nurse is hired not as a casual employee or a temporary employee, but rather becomes a full-time employee. At one point the nurse may work for this particular department and then three months down the road may work for another one, but doesn't in the meantime lose the ability to have the other benefits that come with working in the public service as a permanent employee.
On April 17th, 2007. See this statement in context.