BNA publishes a useful book called Collective Bargaining: Negotiations and Contracts. The book discusses most of the standard contract clauses and provides historical and legal background, comparative wage data and statistics on settlements for U.S. collective bargaining. The book is available as a looseleaf, through Westlaw (BNA-CBNC). BNA's Collective Bargaining Negotiations & Contracts Manual is available through Bloomberg Law.
BNA's Collective Bargaining Bulletin covers collective bargaining negotiations and summarizes recent collective bargaining agreements. The Bulletin is available on lexis, etc.
Collective Bargaining Agreements (CBAs): Leading sources for finding CBAs include:
(1) The U.S. Department of Labor's Collective Bargaining Agreements File for agreements covering at least 1,000 workers;
(2) The Labor Contracts Database by the Institute of Industrial Relations Library;
(3) BNA's Collective Bargaining: Negotiations and Contracts reprints about a dozen high-profile CBAs;
(4) BNA Plus has a large collection of CBAs, and they provide good service (800-372-1033, Option 5). The downside is they charge a premium price;
(5) The Bloomberg Law Labor & Employment Center includes a selection of CBAs (subscription only).
(6) The Cornell library's historic collection of Collective Bargaining Agreements, 1958-1974.
(7) The relevant state labor department's web site (e.g., the Washington State Labor Relations Office).
Canada: The NEGOTECH database provides recent collective bargaining agreements for bargaining units under Federal and provincial jurisdiction.
More Sources: To find more sources for CBAs, see the Catherwood Library's Collective Bargaining Research Guide and/or Finding U.S. Collective Bargaining Agreements by Jan Bissett and Margi Heinen.