Abstract
Recent models for the organization of Classic period Maya in the Guatemala lowlands suggest a complex system of stratified social classes. Much of the basic data supporting such theoretical models is derived from the evidence for the existence of numerous occupational specializations. Previously, the data have been largely inferential, but extensive and comprehensive excavations at Tikal over a period of 13 yr have provided significant information suggesting that the occupations of residents of specific buildings or house groups can be determined. This evidence also suggests techniques by which future excavations might be directed in order to augment existing information.