Some of my students who are advanced Japanese learners need to know special business terms for more fluent communication for business in their Japanese office or communicating with Japanese clients.

'ビジネス日本語用例辞典' might be of help. This book contains 3000 Japanese words that are often used in business. English and Chinese translations are available.

I recommend this book only for people who need to communicate Japanese for business and have passed at least JLPT N2.

http://www.ask-shop.net/shopdetail/042003000002/