The mobility and hardship scheme consists of the following non-pensionable allowances: a) A mobility incentive, which varies according to the number of assignments to field duty stations and the purpose of which is to provide an incentive for the geographic mobility of staff in support of field operations; b) A hardship allowance, the purpose of which is to compensate for the varying degrees of hardship at different field duty stations; c) A non-family service allowance, the purpose of which is to recognize service in non-family duty stations.