Pay is generally expressed in monthly terms, or for a seasonal job it may be expressed in hourly terms. It is not often necessary to negotiate, as there are standard contracts. However, it may be wise to check the salary level with the trade union responsible for the field so that you have an idea of what to expect. Negotiation of your salary usually takes place once you have been offered the job.Holiday pay is regulated by law and included in your pay. Trade unions negotiate pay and extra statutory benefits at national level. Trade union representatives are responsible for local negotiations at the workplace, but only for their members.