Four-yearly Wage Structure Survey 
Sampling errors
Main groups of NCO-11 National total
Unidades: %
;Both sexes;Females;Males;
;2018;2018;2018;
        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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