The MLC, 2006 has come into force on 20 August 2013 in 31 countries which had ratified the Convention before and on 20 August 2012. Those countries include Panama, Liberia, Australia, Canada and others. For countries that ratified the Convention after 20 August 2012 or have still to ratify, it comes into force 12 months after the date of ratification. (e.g. 22 January 2014 in Malta / 20 August 2014 in Malaysia)
(ILO homepage : http://www.ilo.org/ilolex/english/newratframeE.htm)