Success Brief:The Ergo dolly has completely
eliminated trips and falls in its first full year of implementation, contributing to a reduction in the
departmental injury rate. In addition, the Ergo dolly contributed to better ergonomic positioning of other work on
the truck cab and increased productivity. Above all, the culture and attitudes of a veteran workforce have been
transformed and this change of attitudes is continuing to deliver improvements in workplace safety and
productivity.
The Problem
International Truck and Engine Corporation, a subsidiary of Navistar International
Corporation, is a leading producer of mid-range diesel engines, medium trucks, school buses, heavy trucks, and
severe service vehicles. The Company had experienced a high rate of injuries in the cab trim department at its
Springfield Assembly Plant. Analysis of the injury data indicated employees entering and exiting the cab were
slipping, tripping and falling due to the high step-in.
The Solution
In 1998, the Ergonomic-Health and Safety organization used ergonomic analysis tools to
evaluate departmental safety. They identified the dolly as the number one cause of injury in the Cab Trim
Department based upon 13 injuries with a projected $123,550 payout in the calendar year. The dolly, used to
transport the cab through the Cab Trim Department, is a rectangular tube steel frame on four wheels. It supports
four different cab models and is towed through the department by a towveyor system as operators perform their
tasks on the unit. Analysis of the injury data indicated that employees entered and
exited the cab multiple times and that the
injuries resulted from slips, trips and falls over the high step-in. In 1999, a cross-functional team was formed
to address the reduction of injuries. The “Ergo dolly” was developed over several iterations with the input of
many workers. The new design incorporated a step that can slide out of the way when not used and made entry and
exit easier.
The Impact
The Ergo dolly has completely eliminated trips and falls in its first full year of
implementation, contributing to a reduction in the departmental injury rate. In addition, the Ergo dolly
contributed to better ergonomic positioning of other work on the truck cab and increased productivity. The most
profound benefit cannot be measured in quantitative terms, but the culture and attitudes of a veteran workforce
have been transformed because they have been allowed to participate in decisions that impact their jobs. (Prior to
this project, the workers were reluctant to get involved because of the union-management relationship.) This
change of attitudes in management and union is continuing to deliver improvements in workplace safety and
productivity.
Source:Subhash C. Vaidya, Navistar International
Corporation (October 2002).
