Here is a textbook for the study of how to write business mail and business documents for those wanting to work in Japanese companies or Japanese related companies overseas.

Contents
UNIT 1 Going to an exhibition
Chap. 1 Information (within a company)
Chap. 2 Information (between companies)
Chap. 3 Thanking・Making a report

UNIT 2 Acknowledging an order
Chap. 4 Sending a request
Chap. 5 Requesting a delivery date extension
Chap. 6 Inquiry (availability)

UNIT 3 Receiving a complaint
Chap. 7 Inquiry (undelivered goods/insufficient quantity)
Chap. 8 Internal meeting

UNIT 4 Holding a seminar
Chap. 9 Making a request (for a seminar lecturer)
Chap. 1 Approval request

UNIT 5 Building up new customers
Chap. 11 Minutes of a meeting
Chap. 12 Requesting an introduction

UNIT 6 Writing a report・letter of apology
Chap. 13 Business trip report
Chap. 14 Letter of apology
　
This isn't merely a manual showing how to write specific types of mail and documents, it aims at cultivating the learner's ability to think and write for himself/herself, thereby helping new employees and those without practical experience to have a soft-landing when entering employment at a Japanese company.