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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