For headhunter Toshiaki Komatsu, the most electric moment in his work is when he negotiates a candidate's salary contract -- in English.

Komatsu is often the middleman between a Japanese candidate and a foreign executive client. For him, success is when he both satisfies the client with the candidate he has lined up and the candidate with the salary he has negotiated.

A senior consultant for global recruitment consultancy TMP/Hudson Global Resources, Komatsu has gone through such negotiations "hundreds of times."