1. An operations management system, comprising: an operations reference model that models a set of worksite operations, for a worksite, and generates a model output indicative of the modeled set of worksite operations; an error calculation component that receives the model output and actual operations data indicative of actual values for the set of worksite operations from the worksite and generates an error output indicative of a difference between the model output and the actual operations data; and a decision support system that receives the error output and automatically generates a recommended adjustments output indicative of adjustments to the set of worksite operations that will reduce the error output.