Series Is Presented Here As Two Variables--(1)--Original Data, 1919-1930 (2)--Original Data, 1930-1968. Data Represent Unweighted Medians Of Rates Derived From Reports Of Sample Companies, The Rates Being Computed On The Basis Of The Average Number Of Employees On The Payroll. The Original Data Are Given On An Equivalent Annual Basis. NBER Has Reconverted Them Into Monthly Rates By Dividing By 11.77; 12.17; 13.04; 12.62 Respectively, Depending On Whether The Number Of Days In A Given Month Is 31, 30, 28, Or 29. Rates Refer To Wage Earners. Certain Seasonal Industries Are Excluded. Source: Bureau Of Labor Statistics, Monthly Labor Review, July, 1929 And February, 1931.
This NBER data series m08252a appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08252a
Release: NBER Macrohistory Database
National Bureau of Economic Research, Labor Turnover, Layoff Rate, Manufacturing for United States [M0852AUSM497NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0852AUSM497NNBR/, September 4, 2015.