Notes
    
                                    GENERAL NOTES
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The lower age cut-off (and perhaps upper age cut-off) at which information is collected will vary from country to country.
Classifies the main job of any individual with a job (EMPLOYED=1) and is missing otherwise. As most surveys collected detailed information and then coded it using national classifications, and the original data is not in the data bases, no attempt has been made to correct or check the original coding.
The variable should generally cover the active sample (employed and unemployed).
Active sample reported as "not stated (code 99)" should normally include employed for whom the occupation was not identified and unemployed if occupation in last job is not reported. 
COUNTRY SPECIFIC NOTES
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Labels for codes of  D21 (in original survey data) were not defined, therefore a guidance of definitions provided with the 2010 surveys was used.
In addition to International Standard Classification of Occupations (ISCO-88) guidance :  http://laborsta.ilo.org/applv8/data/isco88e.html 
One Undefined code in 2007 survey  was considered 11 (other/unspecified)