Marlena Malag told a conference on Polish support for Ukraine at the Prime Minister's Office that help for Ukrainians fleeing the war was a joint effort by the national government, local authorities and NGOs.
As part of the support programme, Warsaw has made it easy for Ukrainians to find jobs in Poland.
According to Malag, most of the 900,000 have found work in the hotel, catering and service sectors.
Many of the refugees are women with children, who also have received aid from the Polish government, she added.
Pawel Szefernaker, the government's commissioner for aid to Ukrainian refugees, said that Poland was working with the United Nations High Commissioner for Refugees (UNHCR), the International Red Cross, the Polish Red Cross and the Polish Centre for International Aid in supporting refugees. (PAP)