Fixing
BIG vehicles
is cool.ZENDAIKYO – National Council of Heavy Vehicle Repair Shops (Japan)
When a truck or bus is damaged, who repairs it? ZENDAIKYO is a team of 31 professional repair shops for heavy vehicles across Japan, founded in 1979. ZENDAIKYO is the only organization in Japan that produces standard labor-time (kosu) reference materials for heavy truck and bus repair.
The basics in 30 seconds
Kosu (standard work hours) is the time needed to carry out a repair job with standard equipment and skills, expressed in hours.
The labor rate is a repair shop's charge per hour of work.
Labor charge = kosu × labor rate
Labor Rate
Example：2.4 h × 30,000 yen/h ＝ 72,000 yen
These figures are an example to explain the calculation only. Actual repair costs also include parts, paint materials and subcontracting.
ZENDAIKYO does not set or recommend any labor rate amount. Each business decides its own rate based on its own costs.
How much does it cost when the kosu changes?
Labor charge ＝ Kosu (work hours) × Labor rate
Heavy vehicle repair work
Frame straightening
Bringing a truck's bent chassis frame back into true with dedicated equipment.
Body & paint
Repairing dents and repainting large bodies.
Body building
Fitting cargo bodies, cranes and other working equipment.
Estimating
Calculating repair costs using kosu and labor rates.
ZENDAIKYO in numbers
Member companies：Hokkaido & Tohoku 4 / Kanto & Koshinetsu 15 / Chubu, Hokuriku & Kinki 6 / Chugoku 1 / Kyushu & Okinawa 5 Members →