Main subgroups Institut d'Estadística de Catalunya http://www.idescat.cat/classificacions/?tc=5&v0=2&id=ciuo-2008-en&v2=2&lang=en Code;Description; 01;Commissioned armed forces officers; 02;Non-commissioned armed forces officers; 03;Armed forces occupations, other ranks; 11;Chief executives, senior officials and legislators; 12;Administrative and commercial managers; 13;Production and specialised services managers; 14;Hospitality, retail and other services managers; 21;Science and engineering professionals; 22;Health professionals; 23;Teaching professionals; 24;Business and administration professionals; 25;Information and communications technology professionals; 26;Legal, social and cultural professionals; 31;Science and engineering associate professionals; 32;Health associate professionals; 33;Business and administration associate professionals; 34;Legal, social, cultural and related associate professionals; 35;Information and communications technicians; 41;General and keyboard clerks; 42;Customer services clerks; 43;Numerical and material recording clerks; 44;Other clerical support workers; 51;Personal service workers; 52;Sales workers; 53;Personal care workers; 54;Protective services workers; 61;Market-oriented skilled agricultural workers; 62;Market-oriented skilled forestry, fishery and hunting workers; 63;Subsistence farmers, fishers, hunters and gatherers; 71;Building and related trades workers, excluding electricians; 72;Metal, machinery and related trades workers; 73;Handicraft and printing workers; 74;Electrical and electronic trades workers; 75;Food processing, wood working, garment and other craft and related trades workers; 81;Stationary plant and machine operators; 82;Assemblers; 83;Drivers and mobile plant operators; 91;Cleaners and helpers; 92;Agricultural, forestry and fishery labourers; 93;Labourers in mining, construction, manufacturing and transport; 94;Food preparation assistants; 95;Street and related sales and service workers; 96;Refuse workers and other elementary workers;