business title, equivalent of the western Section Chief or Head of Section
Typical number of years of service to the company: 17+ years.
Typical age: 40+ years.
The root of this title seems to be from the 17th century Tokugawa class system, where the head of the household and family was referred to as the Kacho.
REFERENCES: Passport Japan (Dean Engel & Ken Murakami, ISBN 1-885073-17-8) & Encyclopaedia Britannica.