Nowadays, the use of vocabulary learning strategies is one crucial factor that affects the success of work. Vocabulary, that is important not less than grammar and this is the key to work understanding what hears and reads in your office; and to communicating successfully with other employee. For this reason it is very important for her to quickly build up a large company of words. Research studies have shown the strong links between having an extensive vocabulary and achieving company success. Most companies are acceptance people for work that many department which Some employee feel themselves can’t speak English well, One of them isn’t know the words in English. So I would like to survey how the employees of Building & Premises department at Thai Airways Office use in their Vocabulary Learning Strategies routine.