A macroscopic model based on a double-porosity approach is proposed to simulate the swelling caused by the subdivision of particles and aggregates that occurs when bentonites are hydrated under a high water content and low confinement. In the model, it is assumed that although the water that...

Throughout the 1980s, the British unemployment compensation system was subject to a series of administrative changes. At the same time, the proportion of male unemployed workers receiving benefit fell by some twenty percentage points. Using a time series of cross-sections from the Labour Force...

This report examines one major source of bias in the yearly Current Population Survey -- nonresponse rates. It shows evidence of systematic undercounting due to the disproportionately high nonresponse rate from individuals who are less likely to be employed than the general population.

This report examines the unionization rates of African-American workers and finds that the relative representation of African Americans has been steadily declining in unions, manufacturing, and auto manufacturing.

This report uses the past three recessions of the early 1980s, early 1990s and early 2000s to project the effects of a recession in 2008. The report finds that such a recession would result in a significant rise in unemployment and the poverty rate along with a significant decrease in the...

This report shows that official estimates of the number of Americans living in poverty and without health insurance may substantially underestimate the true number of poor and uninsured.

On January 1st, the maximum amount of annual earnings subject to the Social Security tax – a.k.a. the payroll tax cap – increased to $118,500. Every year, this cap is adjusted to keep up with inflation. However, many American workers are not aware that any wages above the cap are not taxed...

This report argues that a key driver in rising inequality and a decline in the employment to population ratio is conscious economic policy, with a particularly important and under-appreciated role for macroeconomic policy. The paper first demonstrates the remarkable “flexibility” of U.S....

There is currently $2.7 trillion in the Social Security Trust Fund, held in Treasury bonds. Since the program is currently taking in more revenues (taxes on payroll and benefits as well as interest on the bonds) than it is paying out, the Trust Fund will continue to grow to about $2.9 trillion....

One of every nine women in the United States (11.8 percent in 2013) is represented by a union at her place of work. The annual number of hours of paid work performed by women has increased dramatically over the last four decades. In 1979, the typical woman was on the job 925 hours per year; by...