На дураках воду возят

People take advantage of those who do the work others do not want to. See Кто везет, на того и накладывают (K), От работы кони дохнут (O), Работа дураков любит (P)

Cf: All lay load (loads) on a willing horse (Br.). All lay the load on the willing horse (Am.). Everyone lays a burden on the willing horse (Am.). Не that makes himself an ass must not complain if men ride him (Am.). The willing horse carries the load (Am.)