This publication (in both English and French versions) on learner assessment in workplace literacy programs begins with a discourse on some dimensions of the testing question. It discusses three major approaches to assessment in the broader area of adult literacy that can shed light in the domain of workplace literacy: traditional, competency based, and profile. The categories of essential skills are described, as a general understanding of these different categories enhances decisions around what types of instruments to use. The categories are: traditional basic skills, thinking skills, teamwork, skills required for continuous learning, and computer skills. Next, the publication describes standardized tests (norm referenced and criterion referenced) and competency-based tests. The second part of the document discusses eight assessment tools that have been used in workplace programs: Tests of Adult Basic Education (TABE) Work-Related Foundation Skills; Tests of Applied Literacy Skills; Basic English Skills Test; Canadian Adult Achievement Test; Measurement, Reading, and Arithmetic; Wide Range Achievement Test 3; and Metric Skills Assessment. Each instrument is described in terms of the test content, the description of scores, and the test development process, along with the source's address and telephone number. (YLB)