In construction and shelter there are numerous opportunities for diversion and profit through substandard workmanship, kickbacks for contracts and favouritism in the provision of valuable shelter material. Thus while humanitarian aid agencies are usually most concerned about aid being diverted by including too many, recipients themselves are most concerned about exclusion. Access to aid may be limited to those with connections, to those who pay bribes or are forced to give sexual favors. Equally, those able to do so may manipulate statistics to inflate the number of beneficiaries and siphon off additional assistance.