Only 9% of managers (of the oil company) were from Khuzestan. The proportion of natives of Tehran, the Caspian, Azarbaijan and Kurdistan rose from 4% of blue collar workers to 22% of white collar workers to 45% of managers, thus Arabic-speakers were concentrated on the lower rungs of the work force, managers tended to be brought in from some distance. There is also a single Armenian church in the centre of the city.