An assessment on the level of employability skills of students is deemed necessary, given the employers' need for skills that must be mastered by job seekers. The purpose of this study is to create an instrument that is able to assess the level of mastery of students' employability skills. Instrument making was carried out through seven stages: composing of variable constructs, preparing of instrument lines, arranging the instrument items, conducting content validation, testing instrument, conducting the consistency analysis of items, and estimating the reliability coefficient of instruments. Based on the instrument making process, it has been found out that the construct of the measured employability skills variable includes the skills of communication, teamwork, problem-solving, and technology utilization. Subsequent stages were carried out procedurally and content validation was carried out until obtaining the expert approval. The process of analyzing the consistency of items and estimating the reliability coefficient of the instrument was conducted using the SPSS. The results of the consistency analysis of items with SPSS showed seven statement items that had an internal consistency index below 0.3. As a consequence, these items were not used for not representing the construct of the measured indicator. After doing the item consistency analysis, 49 good items were obtained and the instrument reliability coefficient was estimated. Based on the analysis results, the reliability coefficient of the instrument obtained the value of 0.905. As the results obtained were more than 0.7, the instrument was then stated to be reliable and could be used as a data collection tool.