Collective bargaining negotiations can discuss one or more of the following issues: wage-related issues (wage rates, cost-of- living adjustments, overtime rates, etc.); supplementary economic benefits (pension plans, paid holidays, health insurance plans, etc.); and institutional issues (rights and duties of employers and employees, unions, employee stock ownership plans and quality of work-life programmes, etc.). Discuss the extent to which the parties' objectives under each of these remain mutually exclusive in the context of the modern working environment.