Professor Mattas research experience includes Food and European Policy and analysis , Rural Development, Agricultural Marketing and Investment Analysis, International Trade inter-industry analysis with specialization to Input-Output models.

His experience is broadened by his employment as a manager in an enterprise of processing agricultural products and by his employment at the Ministry of Agriculture for several years. He is an expert in impact and policy analysis and has served in several relevant EU and National Food Policy Committees.

He is the editor of Agricultural Economics Review and member of the editorial boards of other scientific journals. He also served for six years as a member of the Board of the European Association of Agricultural Economists (EAAE). Mr. Mattas has been also Scientific and Project Coordinator of several European Research Projects.