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Labor is an important part of cost savings in the industry, as it gives an insight on
the operation efficiency of airlines as they are able to freely adjust their route structures to
profit maximize after deregulation. A study that focuses on impact of deregulation on
airline cost saving, done by Baltagi, Griffin, and Rich (1995), analyzes the changes in cost in
the US airline industry before and after deregulation, using a panel data set of airlines. The
paper examines industry trends in load factor, wages, and technological advances. It
analyzes the role of deregulation in supporting technical change. The study concludes that
deregulation has had a ‘pervasive’ effect on technical change and costs. The slow increase
in load factor and adoption of new aircraft is the cause of slow technical growth.
Meanwhile, 9.3% of cost saving for trunk airlines and 19.9% of that of regional airlines are
attributable to deregulation. The savings mainly come from higher load factor, reduced
union wage rates, faster output growth via lower fares, and a more efficient route structure
thanks to the hub-and-spoke system. Baltagi et al’s study gives the foundation of
understanding the deregulation’s role in increasing the operation efficiency of the industry,
as hub-and-spoke system enabled great cost-cuts and increased revenues for both
passenger and cargo transportation, which will affect the two principal factors considered
in this study: passenger number and cargo tonnage.
Theory on market structure and contestability is very relevant to the study on the
impact of airline deregulation. In the book, Contestable Markets and The Theory of Industry
Structure by Baumol, Panzar, and Willig published in 1982, the authors propose the theory
that if there is no cost to potential competitors entering or exiting the market, or ‘perfectly
contestable,’ the firms will establish a price configuration that maximizes market welfare.
Baumol, Panzar, and Willig state that “it is highly possible that air travel provides a real