REVISION TO SEASONAL ADJUSTMENT FACTORS
Beginning with the Unemployment Insurance (UI) Weekly Claims News Release issued Thursday, September 3, 2020, the methodology used to seasonally adjust the national initial claims and continued claims reflects additive factors as opposed to multiplicative factors. Seasonal adjustment factors can be either multiplicative or additive. A multiplicative seasonal effect is assumed to be proportional to the level of the series. A sudden large increase in the level of the series will be accompanied by a proportionally large seasonal effect. In contrast, an additive seasonal effect is assumed to be unaffected by the level of the series. In times of relative economic stability, the multiplicative option is generally preferred over the additive option. However, in the presence of a large level shift in a time series, multiplicative seasonal adjustment factors can result in systematic over- or under-adjustment of the series; in such cases, additive seasonal adjustment factors are preferred since they tend to more accurately track seasonal fluctuations in the series and have smaller revisions. Prior to September 2020, the seasonally adjusted unemployment insurance claims series used multiplicative seasonal adjustment factors. Starting in September Bureau of Labor Statistics staff, who provide the seasonal adjustment factors, specified these series as additive. In accordance with the usual practice, the seasonal adjustment models and factors will be reviewed at the beginning of each calendar year, when prior years of seasonally adjusted estimates will be subject to revision
UNEMPLOYMENT INSURANCE WEEKLY CLAIMS - SEASONALLY ADJUSTED DATA
September 3, 2020 - In the week ending August 29, the advance figure for seasonally adjusted initial claims was 881,000, a decrease of 130,000 from the previous week's revised level. The
previous week's level was revised up by 5,000 from 1,006,000 to 1,011,000. The 4-week moving average was 991,750, a decrease of 77,500 from the previous week's revised average. The previous week's average was revised up by 1,250 from 1,068,000 to 1,069,250.
The advance seasonally adjusted insured unemployment rate was 9.1 percent for the week ending August 22, a decrease of 0.8 percentage point from the previous week's unrevised rate. The advance number for seasonally adjusted insured unemployment during the week ending August 22 was 13,254,000, a decrease of 1,238,000 from the previous week's revised level. The previous week's level was revised down by 43,000 from 14,535,000 to 14,492,000. The 4-week moving average was 14,496,250, a decrease of 709,000 from the previous week's revised average. The previous week's average was revised down by 10,500 from 15,215,750 to 15,205,250.
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Source: DOL
Related: Department of Labor Reports The Initial Unemployment Claims For The Week Ending August 22, 2020 Tops 1 Million, 4-Week Moving Average Decreases to 15,215,750
Department of Labor Reports The Initial Unemployment Claims For The Week Ending August 15, 2020 Rises to 1,106,000 - An Increase of 135,000 From The Previous Week's Revised Level
Department of Labor Reports The Initial Unemployment Claims For The Week Ending August 8, 2020 Decreases to 963,000, A Decrease Of 228,000 From The Previous Week's Revised Level
Department of Labor Reports The Initial Unemployment Claims For The Week Ending August 1, 2020 Tops 1.18 Million, A Decrease Of 249,000 From The Previous Week's Revised Level
Department of Labor Reports The Initial Unemployment Claims For The Week Ending July 25, 2020 Increases to 1.43 Million - 4-Week Moving Average Decreases to 17,058,250
Department of Labor Reports The Initial Unemployment Claims For The Week Ending July 18, 2020 Increases to Over 1.4 Million - 4-Week Moving Average Decreases to 17,505,250
Department of Labor Reports The Initial Unemployment Claims For The Week Ending July 11, 2020 Decreases to 1.3 Million - 4-Week Moving Average Decreases to 18,272,250
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending July 4, 2020 Tops 1.3 Million - 4-Week Moving Average Decreases to 19,085,500
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending June 27, 2020 Tops 1.4 Million - the 4-week Moving Average Decreases to 19,854,000
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending June 20, 2020 Tops 1.4 Million - Over 47 Million Now Unemployed in Fourteen Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending June 13, 2020 Tops 1.5 Million - Over 45 Million Now Unemployed in Thirteen Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending June 6, 2020 Tops 1.5 Million - Over 44 Million Now Unemployed in Twelve Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending May 30, 2020 Tops 1.8 Million - Over 42 Million Now Unemployed in Eleven Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending May 23, 2020 Tops 2.1 Million - Over 40 Million Now Unemployed in Ten Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending May 16, 2020 Tops 2.4 Million - Over 38 Million Now Unemployed in Nine Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending May 9, 2020 Tops 2.9 Million - Over 36 Million Now Unemployed in Eight Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending May 2, 2020 Tops 3.1 Million - Over 33 Million Now Unemployed in Seven Weeks
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending April 25, 2020 Was Over 3.8 Million - Over 30 Million Now Unemployed
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending April 18, 2020 Was 4,427,000 - Now Over 26 Million Unemployed
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending April 11, 2020 Was 5,245,000
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending April 4, 2020 Was 6,606,000, The Previous Week Was Revised Up To 6,867,000
Department of Labor Reports Due to COVID-19 The Initial Unemployment Claims For The Week Ending March 28, 2020 Was 6,648,000, An Increase Of 3,341,000 From The Previous Week's Revised Level