Australian Industry Group chief executive Innes Willox says the federal opposition's paid parental scheme does not make any sense.

Opposition leader Tony Abbott has said if his party wins the September election it will introduce a paid parental scheme which offers 26 weeks' paid leave for women earning up to $150,000.

But Mr Willox says it will be a burden on business and will not attract more women to the workplace.

"We don't think this scheme makes any sense on any way that you look at it," he told the ABC's Inside Business.

"On grounds of equity, on grounds of productivity, on grounds of attracting women in to the workplace."