119 workers in Shannonbridge and 23 in Edenderry will be affected.
Unions are condemning plans by Bord na Mona to lay-off over 200 workers in the Midlands in a week's time.
The BNM Group of Unions is calling on the board of the company to reject the proposals.
The ESB plans to shut plants in Lanesborough, County Longford and Shannonbridge, County Offaly which will possibly hit Bord na Mona workers.
119 workers in Shannonbridge and 23 in Edenderry will be effected.
BNM Group of Unions Secretary, Willie Noone says there are also fears of even more job cuts:
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