Four-yearly Wage Structure Survey 
Sample errors
Main NCO-11 groups. National total
Unidades: %

;Both sexes;Women;Men;
All occupations;0,42;0,56;0,66;
A. Directors and managers;3,73;4,57;4,96;
B. Health and education-related scientific and intellectual technicians and professionals;1,31;1,54;2,26;
C. Other scientific and intellectual technicians and professionals;1,88;2;2,48;
D. Technicians, support professionals;1,25;1,58;1,63;
E. Office employees that do not provide customer service;1,28;1,52;2,07;
F. Office employees that provide customer service;1,76;1,96;2,94;
G. Workers in catering and trade services;1,55;1,94;2,84;
H. Workers in health and personal care services;1,66;1,72;3,63;
I. Workers in protection and security services;3,55;6,08;3,8;
J. Skilled agricultural, livestock, forestry and fishing sector workers;9,3;21,45;9,14;
K. Skilled construction workers, except machinery operators;2,15;15,55;2,16;
L. Skilled workers in the manufacturing industries, except installation and machinery operators;1,4;3,98;1,47;
M. Installation and fixed machinery operators and assemblers;1,36;3,12;1,54;
N. Mobile machinery drivers and operators;1,89;8,11;1,92;
O. Unskilled workers in services (except transport);1,58;1,78;2,91;
P. Agricultural, fishing, construction, manufacturing and transport industry labourers;2,23;4,78;2,41;
Q. Military occupations;31,88;95,65;32,08;
Notas:
Fuente: National Statistics Institute