The Office of English as the Second Official Language of the Tainan City Government (OEASOL) serves as the chief supervisor, planner, and evaluator of the Tainan City Government’s policy to adopt English as the second official language. Since the initiation of the EASOL policy, OEASOL has been actively seeking advice from scholars in various professional fields for this matter; having consulted with experts on the prerequisite mechanisms, the office established a list of possible and achievable approaches to promoting English as the second official language. OEASOL has since drafted specific short-term, mid-term, and long-term goals for various sectors.

The EASOL policy is characterized by two main objectives: to ameliorate the English language environment within the city and to increase English proficiency levels among Tainan citizens. OEASOL is responsible for tracking the progress of all departments in utilizing and synthesizing both external and internal sources to implement the programs. OEASOL staff conduct regular amendments and reflections on the policy in accordance with the status quo. OEASOL also plays a role in significant events and policies conducted by the city government, helping to design, create, and execute multiple innovative projects.

On August 28th, 2014, the Tainan City Government set up the Directions for the Establishment of English as the Second Official Language Office that has been effective ever since. The online recruitment was open to the public in November in the same year. By March 2015, several contract employees have joined the office, which was then officially established and began operating.

OEASOL was initially composed of a director, a deputy director, 7 contract employees, and 1 foreign consultant. Currently, Tainan City Government Deputy Secretary-general and OEASOL Director Lee Hsien-wei, Deputy Director Tien Ling-Hu and 4 other contract employees work at the OEASOL office.