How Frequently do Private Businesses Pay Workers?

[Excerpt] This Beyond the Numbers article analyzes pay frequencies, or lengths of pay periods, that private businesses use in the United States, as collected by the Current Employment Statistics (CES) survey. Data of this nature are not published in any standard Bureau of Labor Statistics (BLS, the Bureau) source, but are available upon request. The article also explains why the CES program collects such data

The Price of everything The Value of Nothing: A (Truly) External Review Of BERL’s Study Of Harmful Alcohol and Drug Use

In March 2009, Business and Economic Research Limited ("BERL") published “Costs of Harmful Alcohol and Other Drug Use,” a report jointly commissioned by the Ministry of Health and ACC. BERL was asked to measure the costs of drug and alcohol abuse to New Zealand society, but not to evaluate specific interventions. BERL calculated annual social costs of alcohol and illicit drug consumption of $6.8 billion, including$4.8 billion in social costs from alcohol alone. The report was cited by Law Commission President Sir Geoffrey Palmer as evidence in support of greater regulation, gaining considerable media coverage. We find substantial flaws in BERL’s method that together account for well over 90% of BERL’s calculated costs of alcohol use. Corrected external costs of alcohol use amount to $662 million and are roughly matched by the$516 million collected in alcohol excise taxes. The BERL report is wholly inadequate for use in assisting policy development.costs and benefits of alcohol usage; alcohol policy; New Zealand; adequacy of consultancy reports

Point-Particle Effective Field Theory I: Classical Renormalization and the Inverse-Square Potential

Singular potentials (the inverse-square potential, for example) arise in many situations and their quantum treatment leads to well-known ambiguities in choosing boundary conditions for the wave-function at the position of the potential's singularity. These ambiguities are usually resolved by developing a self-adjoint extension of the original problem; a non-unique procedure that leaves undetermined which extension should apply in specific physical systems. We take the guesswork out of this picture by using techniques of effective field theory to derive the required boundary conditions at the origin in terms of the effective point-particle action describing the physics of the source. In this picture ambiguities in boundary conditions boil down to the allowed choices for the source action, but casting them in terms of an action provides a physical criterion for their determination. The resulting extension is self-adjoint if the source action is real (and involves no new degrees of freedom), and not otherwise (as can also happen for reasonable systems). We show how this effective-field picture provides a simple framework for understanding well-known renormalization effects that arise in these systems, including how renormalization-group techniques can resum non-perturbative interactions that often arise, particularly for non-relativistic applications. In particular we argue why the low-energy effective theory tends to produce a universal RG flow of this type and describe how this can lead to the phenomenon of reaction {\em catalysis}, in which physical quantities (like scattering cross sections) can sometimes be surprisingly large compared to the underlying scales of the source in question. We comment in passing on the possible relevance of these observations to the phenomenon of the catalysis of baryon-number violation by scattering from magnetic monopoles.Comment: LaTeX, 20 pages plus appendi

Employment, Family Union, and Childbearing Decisions in Great Britain

The paper investigates the relationship between work and family life in Britain. Using appropriate statistical techniques we estimate a five-equation model, which includes birth events, union formation, union dissolution, employment and non-employment events. The model allows for unobserved heterogeneity that is correlated across all five equations. We use information from the British Household Panel Survey, including the retrospective histories concerning work, union, and child bearing, to estimate this model. We obtain well-defined parameter estimates, including significant and correlated unobserved heterogeneity. We find that transitions in and out of employment for men are relatively independent of other transitions. In contrast, there are strong links between female employment, having children and union formation. By undertaking a detailed micro simulations analysis, we show that different levels of female labour force participation do not necessarily lead to large changes in fertility levels. Changes in union formation and fertility levels, on the other hand, do have a significant impact on employment rates.demographic transitions, marriage, divorce, birth, employment

Parallel Importation and Service Quality: An Empirical Investigation of Competition between DVDs and Cinemas in New Zealand

Investigations into the causes and effects of parallel importing have concentrated on price discrimination but arbitrage can also occur on non-price dimensions. Using a natural experiment in the New Zealand film distribution industry between May 1998 and November 2001 we examine the effect of parallel importing on quality as it relates to the timing of the availability of film media. We demonstrate that a) cinema revenues were undermined as consumers substituted viewing films on parallel imported DVDs for thecinema format and b) that studios responded to the threat of parallel imported DVDs by bringing forward the release of films into New Zealand cinemas. The reduced delay between US and New Zealand cinematic release dates is shown to be consistent with the introduction of competition when timing is a dimension of quality and choice. We conclude that parallel importation of DVDs almost certainly resulted in a net increase in welfare in New Zealand

Modelling poverty by not modelling poverty: An application of a simultaneous hazards approach to the UK

We pursue an economic approach to analysing poverty. This requires a focus on the variables that individuals can influence, such as forming or dissolving a union or having children. We argue that this indirect approach to modelling poverty is the right way to bring economic tools to bear on the issue. In our implementation of this approach, we focus on endogenous demographic and employment transitions as the driving forces behind changes in poverty. We construct a dataset covering event histories over a long window and estimate five simultaneous hazards with unrestricted correlated heterogeneity. The model fits the demographic and poverty data reasonably well. We investigate the important parameters and processes for differences in individuals' poverty likelihood. Employment, and particularly employment of disadvantaged women with children, is important.poverty dynamics, poverty transitions, simultaneous hazards

Point-Particle Effective Field Theory II: Relativistic Effects and Coulomb/Inverse-Square Competition

We apply point-particle effective field theory (PPEFT) to compute the leading shifts due to finite-size source effects in the Coulomb bound energy levels of a relativistic spinless charged particle. This is the analogue for spinless electrons of the contribution of the charge-radius of the source to these levels, and we disagree with standard calculations in several ways. Most notably we find there are two effective interactions with the same dimension that contribute to leading order in the nuclear size. One is the standard charge-radius contribution, while the other is a contact interaction whose leading contribution to $\delta E$ arises linearly in the small length scale, $\epsilon$, characterizing the finite-size effects, and is suppressed by $(Z\alpha)^5$. We argue that standard calculations miss the contributions of this second operator because they err in their choice of boundary conditions at the source for the wave-function of the orbiting particle. PPEFT predicts how this boundary condition depends on the source's charge radius, as well as on the orbiting particle's mass. Its contribution turns out to be crucial if the charge radius satisfies $\epsilon \lesssim (Z\alpha)^2 a_B$, with $a_B$ the Bohr radius, since then relativistic effects become important. We show how the problem is equivalent to solving the Schr\"odinger equation with competing Coulomb, inverse-square and delta-function potentials, which we solve explicitly. A similar enhancement is not predicted for the hyperfine structure, due to its spin-dependence. We show how the charge-radius effectively runs due to classical renormalization effects, and why the resulting RG flow is central to predicting the size of the energy shifts. We discuss how this flow is relevant to systems having much larger-than-geometric cross sections, and the possible relevance to catalysis of reactions through scattering with monopoles.Comment: LaTeX, 22 pages plus appendices, v3: revised appendices, made more precise and concise discussion about proton radius for mesonic system

Dynamic Electricity Pricing in California: Do Customers Respond?

Matt Burgess presented Dynamic Electricity Pricing in California: Do Customers Respond? at an ISCR seminar May 2006

Dynamic Electricity Pricing in California: Do Customers Respond?

Matt Burgess presented Dynamic Electricity Pricing in California: Do Customers Respond? at an ISCR seminar May 2006