(99)Measures aiming at the protection of health of the staff involved in the production process, the favouring of social integration of disadvantaged persons or members of vulnerable groups amongst the persons assigned to performing the contract or training in the skills needed for the contract in question can also be the subject of award criteria or contract performance conditions provided that they relate to the works, supplies or services to be provided under the contract. For instance, such criteria or conditions might refer, amongst other things, to the employment of long-term job-seekers, the implementation of training measures for the unemployed or young persons in the course of the performance of the contract to be awarded. In technical specifications contracting authorities can provide such social requirements which directly characterise the product or service in question, such as accessibility for persons with disabilities or design for all users.