Swiss voters are deciding whether to allow more European Union citizens into its labour market.Voters are deciding whether to extend an existing agreement covering 25 EU member states and controversially whether to include new members Romania and Bulgaria. Opinion polls indicate a majority yes vote to allow more immigration into Switzerland where tens of thousands of skilled workers like engineers have poured in in recent years. Posters depicting three black ravens picking at a map of Switzerland has been used by the right wing Swiss People s Party. The no campaign has been marked by much anti immigration rhetoric.. The Swiss government, the trade unions and business leaders are all backing a yes vote. More than twenty per cent of Switzerland s residents are foreign nationals many of who take jobs in the construction and farming industries, filling low paid jobs Swiss people are reluctant to do. Economically Switzerland has out performed the euro zone and in recent years and some argue the opening of the labour market will open its growth potential. More than twenty per cent of Switzerland s residents are foreign nationals, many of whom take jobs in the construction and farming industries, filling low paid jobs Swiss people are reluctant to do. This vote is the third time in eight years the Swiss have been called on to decide a major bilateral treaty with Brussels.