Definition
The building is an activity / business field in the manufacturing / repair / disassembly of buildings / houses, roads and bridges, road and rail bridges, building tunnels, dams and water channels, building the runways, building docks, parking lot, sports fields, station power plants, transmission and distribution, and building communication networks. Including the installation of water pumps, quarrying wells / wc, and etc.
1. Workers / employees / employee is the head of the household / the household members that works on another person or agency / office / company permanently and receives wages / salary, in cash or goods.
2. Entrepreneur are those who do business with to risk, both assisted by members of the household / workers or nothing.