the opinions expressed and arguments employed are those of the authors comments on working papers are welcomed and may be sent to the directorate for employment labour and social affairs oecd rue andrepascal paris cedex france authorship is usually collective but principal writers are named the papers are generally available only in their original language english or french with a summary in the other the use of such data by the oecd is without prejudice to the status of the golan heights east jerusalem and israeli settlements in the west bank under the terms of international law