Economic Policy Review Executive Summary
Measuring the Effects of the September 11 Attack on New York City
Recapping an article from the November 2002 issue
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of the Economic Policy Review, Volume 8, Number 2 View full article PDF


16 pages / 212 kb

Authors: Jason Bram, James Orr, and Carol Rapaport

Index of executive summaries
Bram, Orr, and Rapaport present a detailed account of the costs of the WorldTradeCenter attack. Using data through June2002—the month in which the recovery process at the tradecenter site ended—they estimate that earnings losses, property damage, and cleanup costs total between $33billion and $36billion.Background
The loss of human life and the destruction of commercial property and infrastructure on September11 temporarily reduced the productive potential of the NewYorkCity economy. The attack directly affected economic activity in the area of the WorldTradeCenter and also disrupted a number of industries located in other parts of the city. In this article, the authors seek to quantify the short-term economic impact of the attack on the city’s labor force and capital stock.Argument and Methodology
The authors begin their analysis by calculating the “cost” of the nearly 3,000lives lost in the WorldTrade Center attack. As a measure of this cost, they use the discounted value of the deceased workers’ expected future earnings. The authors’ estimates suggest that lifetime earnings losses for these workers were, in aggregate, roughly $7.8billion—an average of $2.8million per worker. The authors then assess the loss in earnings incurred by workers who were displaced from their jobs as a result of the attack. Explaining that a contracting economy had caused private-sector employment in the city to decline steadily in the months preceding September11, the authors undertake to isolate the job losses attributable to the attack from those attributable to the business cycle. To this end, they employ a dynamic forecasting model to estimate what the path of NewYorkCity’s employment would have been had the attack not occurred (chart). They find that in October2001, the number of private-sector jobs in the city was about 38,000 to 46,000 lower than it would have been otherwise. In February, the range moved to as high as 49,000 to 71,000, then eased to between 28,000 and 55,000 by June2002.Using an estimated breakdown of these employment numbers by industry, the authors then translate the job shortfalls into wage and salary losses. The financial services, air transportation, hotel, and restaurant industries suffered the most severe job losses (chart); the garment and restaurant industries in Lower Manhattan also saw a significant drop in the number of hours worked by employees. Drawing on average earnings figures for each of these city industries, the authors estimate that job losses and work-hour reductions led to a total earnings shortfall of between $3.6billion and $6.4billion as of June2002.Physical capital losses are the next cost component evaluated. The final cost of the cleanup and restoration of the WorldTrade Center site is expected to be about $1.5billion. Another $16.4billion will be required to replace or repair destroyed and damaged buildings at the site and its adjacent areas and to replace the buildings’ contents. Finally, the cost of repairing the damage to Lower Manhattan’s transportation, power, and communications infrastructure is expected to reach 3.7billion.The authors also consider the impact of the September11 events on New York City’s most economically vulnerable residents. They conclude that a sharp rise in Medicaid enrollment after September may be partly attributable to the attack, but find no evidence that the attack produced a significant increase in the city’s welfare rolls.Findings
Adding up the earnings and physical capital losses, Bram, Orr, and Rapaport estimate the total cost of the World Trade Center attack to be between $33billion and $36billion.

Looking forward, the authors suggest that much of the cost burden has already been borne. The WorldTrade Center site was cleaned up months ahead of schedule, and employment in the most clearly affected industries has shown signs of a rebound since March2002. Housing market indicators remain surprisingly buoyant (chart), and survey evidence indicates that consumer confidence in the metropolitan area recovered strongly in the months following the attack.

Employment losses attributable to the WorldTradeCenter attack can be measured as the difference between the actual path of employment and the path that employment would have taken in the absence of an attack. The counterfactual path is represented here by a high-impact scenario and a low-impact scenario, the first scenario reflecting more optimistic assumptions than the second about what job growth would have been.

Path of New York City Private-Sector Employment

Sources: U.S. Department of Labor, Bureau of Labor Statistics; Federal Reserve Bank of NewYork.

Note: See Appendix B for methodology and a full explanation.

Employment losses were heavily concentrated in four industries: financial services, hotels, restaurants, and air transportation. These industries accounted for roughly 80 percent of the private-sector jobs lost in October2001.

Employment in Selected New York City Industries
Employment in Selected New York City IndustriesSource: New York State Department of Labor.

Note: The shading indicates the post-September 11 period.

Selling prices of single-family homes in NewYorkCity’s outer boroughs and nearby suburbs have been rising, reaching a level in the second quarter of 2002 that was 10 to 15percent higher than their year-earlier level.

Single-Family House Price AppreciationSingle-Family House Price AppreciationSource: Office of Federal Housing Enterprise Oversight.

Note: The shading indicates the post-September 11 period.


The views expressed in this article are those of the authors and do not necessarily reflect the position of the Federal Reserve Bank of New York or the Federal Reserve System.