A much smarter proposal also comes from Switzerland: <a href="http://de.wikipedia.org/wiki/Eidgen%C3%B6ssische_Volksinitiative_%C2%AB1:12_%E2%80%93_F%C3%BCr_gerechte_L%C3%B6hne%C2%BB" rel="nofollow">http://de.wikipedia.org/wiki/Eidgen%C3%B6ssische_Volksinitia...</a> .
In Switzerland people will vote this month about a proposal, that companies should not be allowed to pay their highest earning employee more than 12 times the amount they pay their lowest earning employee. This would decrease the income gap, but doesn't force minimum or maximum wages on a company.