A/HRC/32/41 migration, respecting the principle of non-refoulement and ensuring that migrants have regular access to the labour market in the host country, in cooperation with United Nations agencies and programmes and international organizations; (c) Ensure free-of-charge birth and marriage registration of nationals and non-nationals fleeing conflict, including in internally displaced person and refugee camps, in cooperation with United Nations agencies and programmes and international organizations, in order to prevent or address potential trafficking in children for sexual and other forms of exploitation and the exploitation of the labour of individuals, particularly underage children and women; (d) Prevent and prosecute all forms of trafficking in persons for all purposes, including for temporary, forced and/or servile marriages; (e) Grant non-national victims of trafficking residence status and assistance, not to be made conditional on the initiation of criminal proceedings or their cooperation with law enforcement authorities; (f) Adequately train all stakeholders, including peacekeepers and humanitarian personnel working in conflict zones, in refugee camps and in areas of arrival of large influxes of people fleeing conflict, to identify trafficking or risks of trafficking, in cooperation with United Nations agencies and programmes, international organizations, host countries and civil society organizations; (g) Establish and/or adapt national referral mechanisms for assistance and protection services, including gender- and child-sensitive measures, for victims and potential victims of trafficking in persons, involving national authorities and civil society organizations in the decision-making, especially relating to the identification and protection of victims and potential victims; (h) Not detain, prosecute or punish victims of trafficking for violations of immigration laws or for unlawful activities they were involved in as a direct consequence of their situation as trafficked persons, including violations and offences linked with prostitution, petty crime and irregular entry/stay in the host country. 65. United Nations agencies and programmes, international organizations and humanitarian actors should: (a) Share and apply measures, methodologies and indicators to identify as early as possible and prevent trafficking in persons from the outset of a conflict/crisis, even if incidents of trafficking have not been previously detected, and to identify at an early stage trafficking or risks of trafficking, including for the purpose of sexual exploitation and labour exploitation or other forms of exploitation in source, transit or host countries; (b) Establish or revise existing standard operating procedures and conduct training for personnel, including personnel of contractors and implementing agencies who are likely to enter into contact with victims and potential victims of trafficking as well as with traffickers. These should include instructions concerning protective measures, including appropriate and tailored assistance, to be applied when indications of trafficking, exploitation or risk of trafficking are found, in collaboration with authorities and civil society organizations; (c) Include prevention of trafficking in persons as part of life-saving protection activities, from the outset of a conflict/crisis; (d) Include rights-based anti-trafficking response/action in existing cluster systems for humanitarian action; 18