The GRTU has written to the Resources Ministry to protest over plans to raise landfill fees to €20 per tonne from the current €0.91 per tonne.
It said the increase was detrimental to the waste carriers and private industry.
“The waste management sector is today being paid six months in arrears, so it is no longer acceptable for the sector to be able to offer such credit facilities with such a fee increase,” the GRTU said.
“The waste management sector is the carrier in this situation and they should in no way be made to carry the costs of those generating the waste.”
The Chamber called for talks before the increases came into force.