That's what you get for voting in a socialist.
In Sweden nearly all welfare and taxation systems are tailor-made to suit the interests of the union workers, to their specific income brackets and dynamics in the economic system. It's a very clever strategy. Instead of something as simple and obvious as just aiming for higher salaries, the socialists prefer intricate and complex design of the political-economic system as the main strategy to gain as much as possible in the name of equality.