Legal textbooks (sometimes called 'treatises') are essential starting points in the legal research process. They provide authoritative and thorough explanations of legal topics, and are useful to those unfamiliar with subject areas. In addition to providing a summary and commentary on the law, they also point to important cases and legislation that determine legal issues.
The following list contains key online textbooks in labour and employment law.
Wrongful Dismissal & Employment Law (via First Resort) by 
Leading Cases on Labour Arbitration, 2nd edition (via First Resort) by 
Canadian Labour Arbitration [Brown & Beatty] by 
Employment and Labour Law Toolbox (second edition) by 
The Law of Work: Common Law and the Regulation of Work, 3rd edition by 