An optimum operator selection support system, executed by a computer, includes a document computer executable management part, a document feature computer executable extraction part, and a job feature computer executable extraction part. The document computer executable management part manages documents related to jobs stored by the computer, with additional information on operators who generated the documents. The document feature computer executable extraction part extracts a plurality of documents generated by a same operator from the document computer executable management part, and extracts features of the respective documents. The job feature computer executable extraction part extracts features of jobs of the operator by detecting common features based on a frequency of occurrence of terms in the plurality of documents extracted by the document feature computer executable extraction part.