Actually, you mean "pensions are defined in the US" aren't portable. Employer and pension are not tied together in a great deal of countries - for example: sta

Actually, you mean "pensions are defined in the US" aren't portable. Employer and pension are not tied together in a great deal of countries - for example: state-controlled. So even if you switch jobs, the plan remains the same. (Also relevant is that most countries have a single state, so state-controlled means you can actually move anywhere inside the country and keep the same plan).