The Corporate Social Responsibility Coalition (Core) has accused the Government of dragging its feet over the Corporate Responsibility Bill that was tabled on Friday by Labour MP Andy King.
The bill was defeated, but is scheduled to be given a second reading on 26 March.
Core, a 50-strong coalition of charities, trade unions and church groups, is represented by a steering group including Friends of the Earth, Christian Aid, Traidcraft Save the Children, and Amnesty International.
Campaign co-ordinator Brian Shaad from Friends of the Earth said: "The Government is blocking this bill, even though 90 per cent of the proposals are within the existing legislation."
The coalition lobbied King to table the private member's bill to highlight the Government's failure to include clear proposals on business transparency and accountability to stakeholders in its Companies Bill white paper (Third Sector, 21 January 2004).