Alison Johnstone MSP said:
"This research underlines the need for action, and shows that governments and employers have been paying lip service to equal pay law. We know that across our economy women earn 13 per cent less than men in full-time private sector jobs, and almost 34 per cent less in part-time jobs.
"At the moment only public sector employers are required to take steps to ensure pay equality. Voluntary measures have not worked and the time has come to require large private sector employers to ensure pay equality."