- no expense/time loss due to initial familiarization/training

- no compensation for absences (illness, holidays etc.)

- no salary-associated costs and no negative effect on the personnel budget

- cost savings through awareness of local labour market (subsidies, current legal   opinions and decisions)

- security of planning due to predetermined length of employment

- immediate availability of high quality expertise

- unhampered task orientation because of organisational independence

- great reliability due to neutrality and objectivity