This paper models the production technology of an automobile assembly plant as an integrated long and short-term relationship between inputs, labor and capital, and output, number of monthly assembled units. The parameters of the production function, elasticity of output to labor and capital, and the growth rate in total factor productivity (TFP), are estimated using the Error Correction Mechanism (ECR). The paper compares the TFP and the inverse of the hours per vehicle (HPV), the standard measure of productivity used in the industry, as indicators of operating efficiency of a production unit. The empirical application also highlights the potentialities of the ECM in insider and case study econometrics research, especially when the observed output and inputs of a production process deviate from the production technological frontier due to anticipated and unanticipated perturbations in the operations.
