The Irish teachers unions are planning to introduce a pay rise on July 1, amid fears the country is on course for a “lost decade”.
The government’s flagship policy to raise the national minimum wage to €7.20 per hour was unveiled by Mr Obama in the White House last year.
It has been widely expected to be paid in full, although many of the 1.3 million teachers in the country have been paid little or nothing.
The unions have argued the pay rise is needed to boost the economy.
But a government analysis of the National Employment Insurance (NIHI) system by consultancy firm McKinsey found that many teachers were paid less than the minimum wage.
The report, which has not been released, said there were 1.4 million NIHI claimants in 2016, down from 1.6 million in 2014.
The average pay of a full-time NIHI worker was €12.50 an hour in 2016.
But it found that almost one in three NIHI workers was paid less that the minimum rate of €7 an hour.
The pay gap between teachers and other public sector workers was also much wider, with the gap widening to over €100,000 in 2016 compared to just over €60,000 for private sector workers.
This could mean more teachers will have to work in insecure conditions.
Last week, the Irish Government announced it would increase the national wage by 2.5% next year, to €8.80.
The Government says the move will provide a boost to the economy by boosting jobs, boosting incomes and providing a better living standard for all.
The National Teachers Union (NTU) has been pushing for a pay increase for the past five years.
The NTU has been advocating for the national salary to be raised from the current €7, and to increase from there, as the national average of €8 per hour is well above the average for other OECD countries.
However, the National Union of Teachers (NUT) has rejected the union’s proposals.
The NUT said the current minimum wage rate is too low, and that there is a lack of transparency around the pay levels of teachers.
The union also said that the proposed wage increase does not take into account the cost of living in Ireland, which is at record levels.