The purpose of this study is to examine and analyze the effect of human capital supply chain on the firm performance mediated by innovation culture and innovation process on small- and medium-sized construction enterprises (SMEs) in Indonesia. A survey has been distributed to all construction SMEs that have direct involvement in construction work (contractors and subcontractors). The construction SMEs including medium- and small-scale construction services in three Provinces, namely, the special region of Yogyakarta, East Java, and Central Java. Through purposive sampling technique, primary data is collected by giving a questionnaire to the owner/manager of construction SMEs. The target sample in this study was 200 respondents who have been operating for a minimum of two years. 154 valid questionnaires could be processed. Data analysis uses structural equation modeling with AMOS 24. The results of the study conclude that there is a positive effect on human capital supply chain on firm performance mediated by innovation culture and innovation process, while innovation culture does not affect firm performance. In sum, the innovation culture mediates the relationship between human capital supply chain and firm performance, and the innovation process mediates the relationship between human capital supply chain and firm performance.

Abstract
1. Introduction
2. Literature Review
    2.1. Human Capital (HC) Supply Chain andInnovation Culture
    2.2. Human Capital (HC) Supply Chain andInnovation Process
    2.3. Innovation Culture and Firm Performance
    2.4. Innovation Process and Firm Performance
3. Research Methods
4. Results
    4.1. Respondents Description
    4.2. Testing Hypothesis
    4.3. Mediation Test
5. Discussion
6. Contributions
7. Limitation and Recommendations
References

• Muafi MUAFI(Department of Management, Business and Economics Faculty, Universitas Islam Indonesia) Corresponding Author
• Yuni SISWANTI(Department of Management, Business and Economic Faculty, Universitas Pembangunan Nasional Veteran Yogyakarta)
• Awan Kostrad DIHARTO(Economic and Islamic Business Faculty, Department of Management Institute Agama Islam Negeri Surakarta)
• Imanirrahma SALSABIL(Universitas Gadjah Mada)