DOD reimburses the Department of Labor quarterly for unemployment compensation payments provided to former servicemembers. In 2015, DOD reported that unemployment compensation for veterans was 434 million. Differences between military and civilian occupational classification systems can make it difficult for servicemembers to identify civilian jobs that are comparable to their military occupational specialties. Section 2015 of Title 10 directed DOD to carry out a program to enable servicemembers to obtain professional credentials related to their military training that translate into civilian occupations. Senate Report 114-49 accompanying the National Defense Authorization Act for Fiscal Year 2016 included a provision for GAO to review DODs credentialing program. This report 1 assesses the extent to which DOD implemented the statutorily required credentialing program and developed performance measures to guide the program and 2 describes how DOD engages with states to enhance opportunities for servicemembers to attain credentials. GAO reviewed DOD policies and procedures and other documentation and interviewed relevant officials. GAO recommends that DOD develop and implement performance measures for its credentialing program. DOD did not concur with the recommendation, but GAO continues to believe that performance measures are needed to measure the success of the program, as discussed in the report.