This document, which is intended for workforce preparation program providers, details the Illinois Occupational Skill Standards for programs preparing students for administrative support occupations. The document begins with overviews of the Illinois perspective on occupational skill standards and credentialing, the process used to develop the skill standards, and assumptions underlying the standards. Presented next are skill standards for 99 tasks typically performed by administrative support personnel. Each skill standard statement contains the following components: (1) a job summary; (2) the actual skill standard (including the conditions of performance, work to be performed, and performance criteria); (3) performance elements and assessment criteria; and (4) a recommended assessment and credentialing approach. The standards are grouped into the following 13 categories: organizing and planning functions; maintenance of equipment and supplies; financial functions; management of records and files; information processing activities; word processing; machine transcription; basic data processing; computer file manipulation; document processing; database and spreadsheet operations; computer applications; and basic office operations. Appended are the following: glossary; lists of Illinois Occupational Skill Standards and Credentialing Council, Business and Administrative/Information Services Subcouncil, and Administrative Support Standards Development Committee members; Business and Administrative/Information Services Subcouncil Administrative Support Cluster Recognition Proposal; and list of workplace skills. (MN)