The collectives also suffered internal difficulties, particularly as the war dragged on. Unproductive members were an increasing concern and collectives implemented rules about who could join the collective in response. The status of the elderly, orphans, the disabled and widows were particularly divisive issues due to the reduced productivity of these members. Family size became a problem, as families were paid a wage according to the number of children they had and large families would take advantage of the collective's services, which proved to be a financial burden that smaller families resented having to support. Some social groups were also disliked and distrusted by the collectives - Roma were seen as a burden and lacking in revolutionary participation. Refugees to a collective were also a problem, as existing members sometimes regarded themselves as more in tune with the collectivist spirit and felt that the refugees were a burden, at times reacting with hostility to independent efforts by newer members, while the refugees thought they were victims of discrimination. Tensions could also erupt between workers and those in charge of managing output, as well as disputes over how much work members were required to put towards the collective.