In determining whether services should be purchased from other public or nonprofit agencies, the secretary shall consider:

(1) Whether the particular service or services is available or might be developed.

(2) The probability that program and workload performance standards will be met, by means of the services purchased.

(3) The availability of reasonably adequate cost finding and performance evaluation criteria.

Nothing in RCW 43.20A.400 through 43.20A.430 is to be construed to authorize reduction in state employment in service component areas presently rendering such services.