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1

Access Pricing Under Imperfect Competition Reconsidered

100%
Staněk R., Kvasnička M.
Review of Economic Perspectives
|
2012
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vol. 12
|
issue 4
223-234
EN
This paper claims that Onemli’s results published in “Access Pricing under Imperfect Competition”, Review of Economic Perspectives, 2012, are incorrect. Contrary to Onemli, we claim that in an industry, where a monopoly incumbent produces a key input used by itself and its competitors on a downstream market which is Cournot oligopoly, the regulator should set the second-best access charge such that the incumbent’s total profit is zero if the first-best access charge is not feasible. The competitors’ ability to produce the key input themselves does not change the outcome since no competitor chooses to use this option under this regulation. We also discuss some limitations of the Onemli’s model.
2

Determinants of Gratuity Size in the Czech Republic: Evidence from Four Inexpensive Restaurants in Brno

100%
Kvasnička M., Szalaiová M.
Review of Economic Perspectives
|
2015
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vol. 15
|
issue 2
121-135
EN
The paper presents the results of the first study exploring what factors influence tipping in restaurants in the Czech Republic. It shows that the tipping norm evolved here into a form that has some features similar to the tipping norms known in the USA, Canada, and Israel, but there are also striking differences. As in the three countries, the gratuity increases with the bill size but the gratuity as percentage of the bill is much lower here. The bill size explains here a lower part of the gratuity variability too. Also, the service quality results in customers being more generous with their tips, and though the increase in gratuity seems to be small, it rises with a group size. Strikingly, the regular patrons tip significantly less in the Czech Republic and they stiff more often. This supports the hypothesis that the relationship between the customer frequency and the gratuity size is an artifact of a missing variable, and the regular patrons tip differently because they belong to a different social group than occasional customers. Also, the customers paying by card stiff more often here and the interaction between the amount on the bill and use of payment card is statistically insignificant. The group size lowers the percentage gratuity, which supports the diffusion of the responsibility hypothesis. There are differences between genders: Male customers leave bigger tips than female customers, and female waitresses earn more than their male colleagues. The time spent at the table, consumption of alcoholic beverage, and smoking do not change the gratuity size but it may be affected by the weather conditions. The customers tip less and stiff more often when they order a lunch special. They round the total expenditures, not the gratuities, which creates the magnitude effect.
3

Do Auctions Improve Public Procurement? Evidence from the Czech Republic

81%
Kvasnička M., Staněk R., Krčál O.
DANUBE: Law and Economics Review
|
2015
|
vol. 6
|
issue 4
241-257
EN
This paper explores the effect of various contract-awarding procedures in public procurement on the price of the contract. We provide a theoretical model that compares prices in different procedures and tests whether there is a significant price difference between the procedures using data from Czech public procurement. The model predicts that auctions are more efficient than negotiations given the same number of suppliers, and open procedures are more efficient than closed procedures if high-cost firms are selected for the closed procedure. In accordance with the first prediction, we find that open auctions are more efficient than open negotiations. Concerning the second prediction, we find that closed procedures are less efficient than open procedures, which suggests that procurers tend to select relatively more costly firms to participate in closed procedures. Comparing all four awarding procedures, we find that open auctions are the most efficient procedure used in the Czech Republic. We estimate that the inefficiencies due to the use of other contract-awarding procedures are substantial.
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