- Visiting Faculty, Law
- Director, LL.M. (Business Law) Program, Faculty of Law, Chulalongkorn University [in academic partnership with the Faculty of Law of Kyushu University (Japan), the University of British Columbia (Canada), and the University of Victoria (Canada)]
- Deputy Director, MA in European Studies Program, Graduate School, Chulalongkorn University
- Deputy Director, Computer Center, Faculty of Law, Chulalongkorn University
- Member, Private Law Schools Audit Committee, Ministry of University Affairs
- K.Punyashthiti, Japanese Security Regulations (in Thai), Chulalongkorn Law Review, Year 15, Vol 3, pages 1-11.
- K.Punyashthiti, European Union Enviromental Law (in Thai), Selected Articles on the Occasional of Professor Prayoon Karnchanadul 34th Anniversary, Faculty of Law, Chulalongkorn University, 1997, pages 329-347.
- K.Punyashthiti, Course Materials on Significant Business Contracts (in Thai), for class 3401335: Significant Business Contracts at the Faculty of Commerce and Accountancy, Chulalongkorn University, Faculty of Law Chulalongkorn University, 1999.
- K.Punyashthiti, Course Materials on Internal Market Law, for class 2003633: Internal Market Law at the MA in European Studies Program, Graduate School, Chulalongkorn University, 1999
- S.Thanitcul, T.Rikshasuta & K.Punyashthiti, Comparatives Studies on Business Competition Law, The United State of America, The Public of Korea, Japan, European Union and Thailand (in Thai) (responsible for the part on European Union counted for 33%), submitted to the Department of Internal Trade, Ministry of Commerce, ISEP 1999.
- E. Srisawaluck, T.Rikshasuta & K.Punyashthiti, The Study of Legal Framework to Support Participatory Approaches to Decentralization of Agriculture Development Planning to Local Levels (in Thai), submitted to Ministry of Agricultural and Cooperatives, Law and Development Research Center, Faculty of Law, Chulalongkorn University, 2000.
Teaching Experience
- European Economic Law(in Thai), LL.B. Program, Faculty of Law, Chulalongkorn University European Union Law (in Thai), LL.M. Program, Faculty of Law, Chulalongkorn University
- Government and Economic Law of the European Union (in English), LL.M.(Business Law) Program, Faculty of Law, Chulalongkorn University
- Internal Market Law (in Thai), MA in European Studies Program, Graduate School, Chulalongkorn University
- European Union as a Legal and Political System (co-teach) (in English), MA in European Studies Program, Graduate School, Chulalongkorn University
- Significant Business Contracts (in Thai), Faculty of Commerce and Accountancy, Chulalongkorn University