The International Centre for Trade Union Rights (ICTUR) world map on trade union rights gives a unique insight into the complex trends and problems that face workers and trade unionists around the world. The full version can be accessed online here.
The map shows ratification of international conventions on trade union rights and flags up the most serious violations of these conventions, including murders and arrests. A1 size copies can be purchased for £5.
http://www.ictur.org/Eng/Maps.html