Labour law in Canada refers to the laws and regulations governing the unionized workplace. Contrastingly, employment law refers to the rules and regulations that govern the independent employee and employer relationship in a non-unionized workplace. Although unionized workers are also protected by employment law, labour law is particularly concerned with collective bargaining and mediating the relationship between the employee, the employer, and the trade union.
Canadian Labour Law, 2nd ed. by 
Canadian Master Labour Guide: A Guide to Canadian Labour Law by 
The Law of Work: Common Law and the Regulation of Work, 3rd edition by 