You have the dream. You want to live in Spain. You ask yourself (because you're not retired yet), 'how can I make this work? I guess I'll need a job...' and thus is born your search for work in Spain. If you have an EU passport you're in a much better position to find work here, whether it's teaching English or IT work or bartending. If you're non-EU, you're going to find the going much tougher. There's still some hope of finding a sympathetic or sly employer who is willing to risk fines to avoid paying taxes and employing good workers. Plus there's always the chance of an another amnesty.
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