For the second month in a row some substitute teachers in Northern Ireland have not been paid.
In September, the Education Authority (EA) apologised to substitute teachers who were not paid as expected.
It has now confirmed that about 300 teachers have not been paid in October either due to problems with an online system.
The NASUWT union said it had been "inundated" by teachers in "extreme distress".
The EA said it was working to address issues with the system.
