Liberal Democrat MP Sandra Gidley led a debate in Westminster Hall on 13 January 2010 on IBM's pension scheme.
The computer giant announced last July it was consulting on the closure of its final salary pension scheme to existing members of its UK workforce.
Ms Gidley said the firm announced the change - which will affect more than a quarter of IBM's 20,000 UK staff - "out of the blue".
The Hampshire MP said long-serving employees felt the government was offering them no protection against IBM's "bully boy tactics".
Work and Pensions Minister Angela Eagle said the issue remained a matter for IBM, but added that she was sympathetic to members of the firm's pension scheme.
Ms Eagle said she hoped IBM's board would take note of the anger and worry the decision had caused many of its employees.