This paper presents a method for the assessment of oral fluency in Business English according to a two corpora-based lexical approach. The original query for our research is the possibility of estimating the level of oral skills among Business English (BE) learners by contrasting their word use in oral presentations with corpus data frequencies. Use of Information Technology (IT) resources and electronic BE corpora is thus measured in the evaluative approach to identify significant performance changes between learners who have used such electronic resources and learners who have not.