Andrew Moore - Language and Occupation

http://www.universalteacher.org.uk/lang/occupation.htm

Occupations are an important feature of society. Any analysis of how society works is likely to consider occupations - these are a very common feature of social organization, more or less universal in economically developed societies and throughout recorded history. Occupations could not really exist without language, especially those in which many people work together, and need to pass on information about how to do things, or about current tasks.