Work visa vs retirement visa: know the difference
This is the single most important thing to get right. A retirement or pensioner visa in countries like Thailand, Panama or Ecuador typically does not grant permission to accept paid local employment; working on one anyway can risk your visa status. If you want to teach for pay, you generally need an actual work permit or work visa, arranged either by an employer or independently, and rules vary hugely by country.
Some retirees sidestep this entirely by volunteering, teaching informally to friends, or teaching online for a company based outside the country they live in — but tax and visa rules can still apply, so this isn't automatically a loophole. Confirm your plan with the embassy or a local immigration lawyer before you commit.
