Series Is Presented Here As Two Variables--(1)--Original Data, 1919-1930 (2)--Original Data, 1930-1968. Data Were Revised On The Basis Of The 1957 Standard Industrial Classification. Beginning In 1943, Labor Turnover Rates Refer To All Employees; Previously Only Production Workers Were Covered. Source: Bureau Of Labor Statistics, For 1930-June, 1961 Data: Employment And Earnings Statistics For The United States, 1909-1960, Bls Bulletins No. 1312 (1312-1, 1961 Etc.); For July, 1961-1968 Data: Factory Labor Turnover, Monthly Bls Release.
This NBER data series m08252b appears on the NBER website in Chapter 8 at http://www.nber.org/databases/macrohistory/contents/chapter08.html.
NBER Indicator: m08252b
Release: NBER Macrohistory Database
National Bureau of Economic Research, Labor Turnover, Layoff Rate, Manufacturing for United States [M0852BUSM497NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M0852BUSM497NNBR/, September 2, 2015.