Can I work remotely for a Korean company while living outside Korea?

This is increasingly common, and the visa side is actually the simplest part. If you live outside Korea and work remotely for a Korean company, you generally do not need a Korean work visa at all, because work visas are about working physically inside Korea, and living abroad puts you outside immigration's scope. The bigger questions are tax and employment structure. Tax residency usually follows where you physically live and work, so you would typically owe income tax in your country of residence rather than Korea, though whether Korea withholds anything depends on if you are treated as an employee or an independent contractor and whether a tax treaty applies.

In practice, many Korean companies engage overseas remote workers as independent contractors rather than payroll employees, because putting a foreign-resident employee on Korean payroll creates complications with the National Pension and health insurance system. You would then invoice them and handle your own taxes locally. It is worth confirming whether your country has a double taxation treaty with Korea, which prevents being taxed twice, and most major countries do. Because the details hinge on your nationality, country of residence, and contract type, a short consultation with a tax professional who handles cross-border work is genuinely worth it, but from the visa angle alone, working remotely from abroad for a Korean employer does not by itself require any Korean visa.