The BSP chief said that the UPA government should ensure that the FDI policy should not affect local traders.
Mayawati admitted that allowing FDI is the only option to bring in foreign investment. But she also added that the UPA government should not take any decision on FDI in hurry.
However, Parliamentary Affairs Minister Kamal Nath is confident of the Samajwadi Party and BSP's support.
"I have good reason to believe that they (SP and BSP) will vote with the government because they are a responsible party and that they will understand the politics of it... They are not going to vote for the politics of the BJP," Nath said.
FDI issue will be debated and voted upon in this week in both Houses of Parliament.
Addressing a press conference, Mayawati said, "Foreign investment is important for the country but the sectors in which it should be allowed is also important. If foreign direct investment is to hit the domestic markets, then it should be looked into it."
"By inviting FDI in retail and that too with no clause that mandates use of local produce, it would be not right for the government to go ahead with it. Our party and most people of the country think that the farmers, traders, small industries will be hit by FDI in retail," she said, adding, "It will directly affect the poor and middle class people of the country. Our country will become an economic slave through these foreign companies."