From the
horse's mouth:
Bulgaria and Romania
Protocol II on extending the free movement agreement to Romania
and Bulgaria (EU-2) took force on June 1, 2009. Employees and service
providers from these countries will initially be subject to interim provisions,
however.
Switzerland has decided to continue restrictions on citizens from Romania
or Bulgaria until 2016 at the latest. Thus, citizens from these countries are
facing restricted access to the Swiss labor market and are subject to special
quotas. Domestic workforce can be given precedence over Romanian and
Bulgarian citizens, and salary and work conditions may be checked by the
authorities.