Do English teachers pay tax in Korea?

As a professional in the field of cryptocurrency and finance, I'm not directly familiar with the tax policies in Korea for English teachers. However, I can certainly pose the question in a way that encourages clarification: "I'm curious to understand the tax obligations for English teachers in Korea. Do they need to pay tax on their earnings, and if so, what are the specific regulations and procedures they should follow to ensure compliance? Additionally, are there any tax incentives or exemptions available for teachers that might impact their overall tax liability?