Add to ORKGPublications of the International Labour Office enjoy copyright under Protocol 2 of the Universal Copyright Convention. Nevertheless, short excerpts from them may be reproduced without authorization, on condition that the source is indi- cated. For rights of reproduction or translation, application should be made to ILO Publications (Rights and Licensing), International Labour Office, CH-1211 Geneva 22, Switzerland, or by email: rights@ilo.org. The International Labour Office welcomes such applications. Libraries, institutions and other users registered with a reproduction rights organization may make copies in accor- dance with the licences issued to them for this purpose. Visit www.ifrro.org to find the reproduction rights organization in...