> A country-wide collusion between employers to fix wages. That doesn't seem possible. Why? I would rather guess that this is very common. Obviously, they cann

> A country-wide collusion between employers to fix wages. That doesn't seem possible. Why? I would rather guess that this is very common. Obviously, they cannot fix wages directly, but they might outsource the job of estimating wages to some agencies providing the market wages for relevant positions. If every employer asks the same agencies, they all arrive at the same wages, with minor variations.