Research and analysis conducted to determine the effects of reducing the administration time for one or more levels of the Basic Occupational Literacy Test (BOLT) are described. The total usable sample consisted of 2,423 subjects. Data were collected from 23 states from 1978 to 1981. Data came from a variety of sources, including schools and training programs of all types. The Advanced and Fundamental BOLT subtests were divided into six batteries, and sampled states were assigned a battery to collect data with minimum collection goals to ensure inclusion of sex, race, and economic-level minorities. Correlations among Brief Time Form A, Brief Time Form B, Standard Time Form B, and the appropriate Wide Range Scale Score were calculated for eight content/level groups. Subjects were administered the appropriate subtest Form A with half the standard time limit and Form B with half the limit. Then the remaining half of the time limit was given for the same Form B. Results of t-test analyses revealed a significant effect on total group mean scores between brief and standard time limits for Battery I--Reading Vocabulary, Advanced; Battery I--Reading Comprehension, Advanced; and Battery III--Arithmetic Reasoning, Advanced. Analysis of variance indicated a significant adverse effect on minority groups for the calculated difference between brief and standard scores for three of the subtests. Considering the results of the analysis for all four BOLT subtests, no reduction in time limits can be recommended. Thirty-four tables give study results. (SLD)