Sampling errors Results by occupation (main groups) of the main breadwinner and variation coefficient. Units: % ;variation coefficient; All occupations;1.54; Management of companies and Public Administration;4.93; Scientific and intellectual technicians and professionals;6.13; Support technicians and professionals;5.19; Administrative type employees;6.43; Catering, personal and protection services employees and salespersons;5.87; Workers skilled in agriculture and fishing;8.79; Craftspersons and employees qualified for the manufacturing, construction, and mining industries;3.27; Operators and fitters of fixed machinery and drivers and operators of mobile machinery;5.18; Unskilled workers;5.52; Notes: 1) Households with employed main breadwinner Source: National Statistics Institute