Bureau of Labor Statistics
Statistics for inflation (CPI); employment; earnings & wages; productivity; and more. Statistics also arranged by the U.S. Economy as a whole, industries, regions, states, MSA's, and international areas.

Monthly Labor Review, (1989 to current online).
Library has 1918 to current. See current and bound periodicals section HD8051 .A78, Some issues are in print, some are on microfilm no. 206.

Handbook of U.S. Labor Statistics
REF HD8051 A63 latest

Profiles of American Labor Unions
REF HD6504 P64 1998