Four-yearly Wage Structure Survey 
Sampling errors
Main groups of NCO-11 National total
Unidades: %
,Both sexes,Females,Males,
        Todas las ocupaciones,0,42,0,6,0,67,
        A Directors and managers,4,5,49,5,2,
        B Health and education scientific and intellectual professionals and specialists,1,33,1,62,2,3,
        C Other scientific and intellectual specialists and professionals,1,87,2,15,2,32,
        D Specialists; support professionals,1,4,1,74,1,78,
        E Office employees who do not deal with the public,1,54,1,92,2,31,
        F Office employees who deal with the public,1,62,1,84,2,67,
        G Catering and trade services workers,1,75,1,9,3,56,
        H Health services and personal care workers,1,73,2,04,3,02,
        I Protective and security services workers,4,39,8,67,4,53,
        J Skilled agricultural, livestock, forestry and fishery workers,7,81,19,47,7,95,
        K Skilled construction workers, except machinery operators,2,1,13,42,2,11,
        L Skilled manufacturing industry workers, except installation and machinery operators,1,39,3,45,1,44,
        M Stationary plant and machine operators, and assemblers,1,93,3,65,2,17,
        N Mobile machine drivers and operators,2,11,8,34,2,16,
        O Unskilled services workers (except transport),1,71,2,03,3,3,
        P Agricultural, fishery, construction, manufacturing and transport industry labourers,1,94,3,74,2,1,
        Q Military occupations,18,91,103,64,19,04,
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