These skill standards for the industrial maintenance general maintenance cluster are intended to be a guide to workforce preparation program providers in defining content for their programs and to employers to establish the skills and standards necessary for job acquisition. An introduction provides the Illinois perspective; Illinois Occupational Skill Standards and Credentialing Council requirements for occupational skill standards; sample format; occupational earnings and employment information; assumptions for these specific skill standards; and performance skill levels. The 77 skill standards are categorized into these 8 performance areas: general business; safety and environment; general maintenance; construction; plumbing and piping; mechanical maintenance; electrical maintenance; and heating, ventilation, air conditioning, and refrigeration. Components of each skill standard are performance area; skill standard, including conditions of performance, work to be performed, and performance criteria; performance elements; and performance assessment criteria, with a listing of required testing, certification, and/or licensing; product; and process. Appendixes include a cluster-specific glossary; cluster-specific tool kit; glossary; and listing of workplace skills. (YLB)