The Flexible Business Language Curriculum is a curriculum model designed for customization of foreign language instruction for businesses and commercial organizations. It uses traditional language content areas (grammar and functions) but in contexts less familiar to language teachers. The model is based on the communicative approach, with emphasis on skills needed for both oral and written communication. Steps in design of a curriculum based on this model include: analysis of all relevant material in the language content areas (grammar, functions, situations, and vocabulary); listing of functions and vocabulary for each business situation to be incorporated; identification and listing of grammar necessary to use the functions and handle the situations at the individual student's level; and listing of activities and resources for each situation. Advantages of this approach include: choice of only the situations of greatest interest and need to the learners; reduced lead time for course organization; and potential for criterion-referenced testing. Limitations include too much flexibility for some teaching contexts and lack of sequential programming in grammar. Appended materials include lists of grammatical constructions, functions/skills, and topics/vocabulary for beginning, intermediate, and advanced levels of instruction; a list of business communication situations; and a sample curriculum organization. (MSE)