The biggest challenge when implementing statement-of-work spend into a contingent workforce program is having an effective change management strategy in place to help engagement managers with what will be a significant shift, Frank Enriquez wrote in a new CWS 3.0 article. Enriquez, CCWP, senior manager of contingent workforce strategies and research, sales, with Staffing Industry Analysts, examines possible changes in behavior and responsibilities a new contingent workforce program SOW management initiative may bring.