An investigation into pregnancy discrimination at work was launched today after disclosures that women were being unlawfully sacked.

The Equal Opportunities Commission said pregnant women were also facing unpleasant remarks and unfounded criticism in workplaces across the UK.

A survey of 1,200 male and female workers found one in five did not believe expectant mothers were being treated fairly by their employers.

One in five knew someone who had experienced problems at work because of their pregnancy, such as being given unsuitable duties, or were even sacked, which was against the law.

The EOC said its helpline received more calls from women facing pregnancy-related problems than any other subject, including equal pay.

"We hear of quite appalling cases of women who have been demoted, disciplined or even sacked, simply for having a baby," said Jenny Watson, deputy chairwoman of the commission.

"This discrimination during pregnancy continues to happen despite a widespread understanding of pregnant women's employment rights. We need to find out why."

The EOC announced investigation would run until February 2005 and would include a survey of employers and women as well as interviews with firms found guilty of discrimination.

The investigation, the first of its kind in the UK, was aimed at finding the extent of the problem and making recommendations to the Government.

Trade and Industry Secretary Patricia Hewitt said she welcomed new research and looked forward to the results of the investigation.

She said: "Employers who discriminate against pregnant women are breaking the law and could be liable to pay compensation.

"They are being foolish and harming their own businesses by excluding talented women from the workforce."

Monday September 1, 2003