Three out of four schools were unable to attract any applicants for advertised teaching roles last year.
Too many children are missing out on a full range of subjects at school.
The Teachers' Union of Ireland says Government inaction is having a hugely damaging effect - with teacher retention now as big a challenge as teacher recruitment.
TUI President Anthony Quinn says a recent survey found 75% of schools advertised positions last year - for which no teacher applied.
General Secretary of the TUI, Tullamore's Michael Gillespie says the country is losing teachers due to lifestyle and workload issues:
Burst Mains Leaves Offaly Homes Without Water
Westmeath Shopping Centre Closes After Significant Flooding
Two-Year Sentence For Fighter Who Held Knife To Woman's Chest Weeks Before Killing His Mother
TII Questioned Over Criteria For Allocating Funding To Local Authorities
Laois TD Renews Funding Call For Courthouse
Midlands Based Pharma CEO Picks Up Award
Six Months Of Traffic Disruption Ahead As Water Mains Works Begin In Westmeath
Hybrid Working Drives Irish Rail Services To Capacity In The Midlands