A collective labour agreement is a written agreement covering aspects of working conditions, such as wages, bonuses, payment of overtime, working hours, trial periods, notice periods or pensions. Matters such as schooling, child care and early retirement may also be covered. Collective labour agreements are concluded between one or more employers, one or more employer organisations and one or more employee organisations (usually trade unions).
Collective labour agreement provisions are often more favourable than statutory provisions. Wage levels in collective labour agreements are frequently higher than the minimum wage, and the number of holidays agreed is often greater than the legal minimum. However, the agreements may never violate the law, such as the Civil Code or the Minimum Wage and Holiday Allowance Act. Collective labour agreements may not contain provisions that sanction wage levels below the legal minimum or fewer holidays than the number stated in the Civil Code.