c99df3c4_nce_Guide___Configuring_Apache__Description
[Directive] JkWorkersFile [Description] 
The name of a worker file for the Tomcat servlet containers. This directive is only allowed once. It must be put into the global part of the configuration. If you don't use the JkWorkerProperty directives, then you must define your workers with a valid JkWorkersFile. There is no default value.
The Apache Tomcat Connector - Reference Guide - Configuring Apache
Description