A/HRC/17/31 rights is distinct from issues of legal liability and enforcement, which remain defined largely by national law provisions in relevant jurisdictions. Depending on circumstances, business enterprises may need to consider additional standards. For instance, enterprises should respect the human rights of individuals belonging to specific groups or populations that require particular attention, where they may have adverse human rights impacts on them. In this connection, United Nations instruments have elaborated further on the rights of indigenous peoples; women; national or ethnic, religious and linguistic minorities; children; persons with disabilities; and migrant workers and their families. Moreover, in situations of armed conflict enterprises should respect the standards of international humanitarian law. 13. The responsibility to respect human rights requires that business enterprises: (a) Avoid causing or contributing to adverse human rights impacts through their own activities, and address such impacts when they occur; (b) Seek to prevent or mitigate adverse human rights impacts that are directly linked to their operations, products or services by their business relationships, even if they have not contributed to those impacts. Commentary Business enterprises may be involved with adverse human rights impacts either through their own activities or as a result of their business relationships with other parties. Guiding Principle 19 elaborates further on the implications for how business enterprises should address these situations. For the purpose of these Guiding Principles a business enterprise’s “activities” are understood to include both actions and omissions; and its “business relationships” are understood to include relationships with business partners, entities in its value chain, and any other non-State or State entity directly linked to its business operations, products or services. 14. The responsibility of business enterprises to respect human rights applies to all enterprises regardless of their size, sector, operational context, ownership and structure. Nevertheless, the scale and complexity of the means through which enterprises meet that responsibility may vary according to these factors and with the severity of the enterprise’s adverse human rights impacts. Commentary The means through which a business enterprise meets its responsibility to respect human rights will be proportional to, among other factors, its size. Small and medium-sized enterprises may have less capacity as well as more informal processes and management structures than larger companies, so their respective policies and processes will take on different forms. But some small and medium-sized enterprises can have severe human rights impacts, which will require corresponding measures regardless of their size. Severity of impacts will be judged by their scale, scope and irremediable character. The means through which a business enterprise meets its responsibility to respect human rights may also vary depending on whether, and the extent to which, it conducts business through a corporate group or individually. However, the responsibility to respect human rights applies fully and equally to all business enterprises. 14