What is the Waspi campaign about?published at 16:40 Greenwich Mean Time 1 February 2016
Westminster Hall
In a crowded session, MPs in Westminster Hall are debating an e-petition relating to transitional state pension arrangements for women born in the 1950s.
Millions of women born in the 1950s say they weren't given enough notice that the state retirement age was rising.
Under the 1995 Pensions Act, the government decided that the pension ages of both men and women would be equalised by 2020. Previously, women retired at 60, while men retired at 65.
In 2011, state pension ages were raised at an even faster rate.
Some of those born between April 1951 and 1960 will not qualify for a pension until the age of 66.
Campaigners belonging to Women Against State Pension Inequality (WASPI) say some women had very little notice that they would not get a pension at 60.
They are calling for "transitional arrangements" for those affected.
Pensions Minister Baroness Altmann has insisted that letters sent to women informing them of changes to their state pension age were clear.