Akira Hibiki

Is a Voluntary Approach an Effective Environmental Policy Instrument? A Case for Environmental Management Systems

Using Japanese facility-level data from an Organisation for Economic Co-operation and Development survey, we estimate the effects of implementation of ISO14001 and publication of environmental reports on the facilities’ environmental performance. While most previous studies focused on an index of emissions toxicity, this study examines three areas of impacts, none of which have been explored in the literature: natural resource use, solid waste generation, and wastewater effluent. The study is also unique in that the effectiveness of ISO14001 is considered in relation to environmental regulations. Our findings are summarized as follows. First, both ISO14001 and report publication help reduce all three impacts; the former appears more effective in all areas except wastewater. Second, environmental regulations do not weaken the effect of ISO14001. Third, assistance programs offered by local governments—a voluntary approach—promote facilities’ adoption of ISO14001. These findings suggest that governments can use command-and-control and voluntary approaches concurrently.

Japanese voluntary environmental agreements: Bargaining power and reciprocity as contributors to effectiveness

Theoretical and empirical research on voluntarism has focused primarily on U.S. and European examples, but has generally failed to consider the Japanese system of voluntary environmental agreements. Nevertheless, Japanese VEAs are one of the world’s oldest experiments in voluntary policy; careful analysis of the characteristics and contexts may improve understanding about the critical factors associated with effective voluntary policy. This paper reviews the extant literature on voluntarism focusing specifically on the bargaining context within which agreements are negotiated. It details three factors that contribute to the effectiveness of voluntary policy generally: regulatory bargaining power, non-regulatory bargaining power and reciprocity. The paper then provides a brief but detailed analysis of the development of voluntary agreements in Japan. Comparisons with voluntary policies in the U.S. and Europe are included. Findings indicate similarities and some significant differences between the Japanese system and other national systems of voluntary policy. Conclusions discuss implications for theory and policy.

Environmental Information Provision, Market Valuation, and Firm Incentives: An Empirical Study of the Japanese PRTR System

The environmental performance of a listed firm could affect its level of investment in pollution prevention and its access to financial markets. Previous studies using Tobin’s q that explore market response to environmental performance do not distinguish between the impact of performance on investment and market response, which may mislead conclusions. To overcome this problem, we simultaneously estimate the functions of the intangible asset, the replacement cost, and the toxic chemical risk. We find that the Japanese financial market does not value risk associated with toxic chemical releases. Nevertheless, even without market valuation, firms increase investment to reduce pollution. (JEL D21, Q58)

Panel Data Analysis of Japanese Residential Water Demand Using a Discrete/Continuous Choice Approach

Block rate pricing is often applied to income taxation, telecommunication services, and brand marketing in addition to its best-known application in public utility services. Under block rate pricing, consumers face piecewise-linear budget constraints. A discrete/continuous choice approach is usually used to account for piecewise-linear budget constraints for demand and price endogeneity. A recent study proposed a methodology to incorporate a separability condition that previous studies ignore, by implementing a Markov chain Monte Carlo simulation based on a hierarchical Bayesian approach. To extend this approach to panel data, our study proposes a Bayesian hierarchical model incorporating the individual effect. The random coefficients model result shows that the price and income elasticities are estimated to be negative and positive, respectively, and the coefficients of the number of members and the number of rooms per household are estimated to be positive. Furthermore, the AR(1) error component model suggests that the Japanese residential water demand does not have serial correlation.

Panel Data Analysis Of Japanese Residential Water Demand Using A Discrete/Continuous Choice Approach

Block rate pricing is often applied to income taxation, telecommunication services, and brand marketing in addition to its best-known application in public utility services. Under block rate pricing, consumers face piecewise-linear budget constraints. A discrete/continuous choice approach is usually used to account for piecewise-linear budget constraints for demand and price endogeneity. A recent study proposed a methodology to incorporate a separability condition that previous studies ignore, by implementing a Markov chain Monte Carlo simulation based on a hierarchical Bayesian approach. To extend this approach to panel data, our study proposes a Bayesian hierarchical model incorporating the individual effect. The random coefficients model result shows that the price and income elasticities are estimated to be negative and positive, respectively, and the coefficients of the number of members and the number of rooms per household are estimated to be positive. Furthermore, the AR(1) error component model suggests that the Japanese residential water demand does not have serial correlation.

Exact Estimation of Demand Functions under Block-Rate Pricing

This article proposes an exact estimation of demand functions under block-rate pricing by focusing on increasing block-rate pricing. This is the first study that explicitly considers the separability condition which has been ignored in previous literature. Under this pricing structure, the price changes when consumption exceeds a certain threshold and the consumer faces a utility maximization problem subject to a piecewise-linear budget constraint. Solving this maximization problem leads to a statistical model in which model parameters are strongly restricted by the separability condition. In this article, by taking a hierarchical Bayesian approach, we implement a Markov chain Monte Carlo simulation to properly estimate the demand function. We find, however, that the convergence of the distribution of simulated samples to the posterior distribution is slow, requiring an additional scale transformation step for parameters to the Gibbs sampler. These proposed methods are then applied to estimate the Japanese residential water demand function.

Empirical Study on Determinants of Household Solid Waste and the Effect of the Unit Pricing in Japan

In our study, we explore the determinants of emissions of the garbage and recyclable materials and examine how the unit pricing affects the emissions of the garbage and recyclable materials. We found that (1) the unit pricing reduces the garbage emission and encourages the recycling activity of the household, (2) the household with lower income has smaller price elasticity to the garbage and the recyclable materials emissions. (3) the availability of the smaller bag is likely to increase the price elasticity of the garbage by approximately 4 times, (4) for the case of no smaller bag, 56% of the garbage emission is missing, while 86 % is missing for the case that the smaller bag is available. Our policy recommendations are; (1) we should be careful about the repressiveness of the unit-pricing, when the municipalities charge the higher price on the bag. (2) the availability of the smaller bag will be an important factor to improve the effectiveness of the unit-pricing. (3) the municipalities should be careful that most part of the emission reduction of the garbage might result in illegal dumping. If this is the case, the unit-pricing is not good without proper policy against the illegal dumping.

Do Environmental Regulations Increase Bilateral Trade Flows

Abstract The argument that stringent environmental regulations are generally thought to harm export flows is crucial when determining policy recommendations related to environmental preservation and international competitiveness. By using bilateral trade data, we examine the relationships between trade flows and various environmental stringency indices. Previous studies have used energy intensity, abatement cost intensity, and survey indices for regulations as proxies for the strictness of environmental policy. However, they have overlooked the indirect effect of environmental regulations on trade flows. If the strong version of the Porter hypothesis is confirmed, we need to consider the effect of environmental regulation on gross domestic product (GDP), because GDP induced by environmental regulation affects trade flows. The present study clarifies the effects of regulation on trade flows by distinguishing between the indirect and direct effects. Our results indicate an observed non-negligible indirect effect of regulation, implying that the overall effect of appropriate regulation benefits trade flows.

Does the Housing Market Respond to Information Disclosure?: Effects of Toxicity Indices in Japan

The policy instruments that provide information on a firms or facilitys environmental performance, such as the U.S. Toxic Release Inventory (TRI) and the Pollutant Release and Transfer Register system (PRTRs) used in some European countries and Japan, play an important role in encouraging firms or facilities to improve their environmental performance, if investors, consumers and residents recognize their environmental performance. This study uses a hedonic approach to explore how the Japanese rental housing market responds to carcinogenic risk arising from releases and transfers of chemical substances produced and used at close facilities. We found that residents do not perceive carcinogenic risk generated more than 1.0 km away from their residence and that they seem to recognize the increased carcinogenic risk at distances from 0.5 km to 1.0 km away; a 1% increase in carcinogenic risk reduces the average rent by 0.0007%. The distance at which residents perceive the risk arising from such facilities is less than in previous studies. This suggests that the risk perception recognized in previous studies may capture the other externalities in addition to the chemical risk because the risk is measured by the distance.

A discrete/continuous choice model on a nonconvex budget set

ABSTRACT Decreasing block rate pricing is a nonlinear price system often used for public utility services. Residential gas services in Japan and the United Kingdom are provided under this price schedule. The discrete/continuous choice approach is used to analyze the demand under decreasing block rate pricing. However, the nonlinearity problem, which has not been examined in previous studies, arises because a consumer’s budget set (a set of affordable consumption amounts) is nonconvex, and hence, the resulting model includes highly nonlinear functions. To address this problem, we propose a feasible, efficient method of demand estimation on the nonconvex budget. The advantages of our method are as follows: (i) the construction of an Markov chain Monte Carlo algorithm with an efficient blanket based on the Hermite–Hadamard integral inequality and the power-mean inequality, (ii) the explicit consideration of the (highly nonlinear) separability condition, which often makes numerical likelihood maximization difficult, and (iii) the introduction of normal disturbance into the discrete/continuous choice model on the nonconvex budget set. The proposed method is applied to estimate the Japanese residential gas demand function and evaluate the effect of price schedule changes as a policy experiment.