Minister for Transport Paschal Donohoe has said the Luas will be "wrecked" if increasingly hostile industrial unrest between the company and drivers continues.
He said it was "imperative that the planned meetings taking place between the Workplace Relations Commission and the employers and the employees happen and that they happen on a reasonable basis".
Speaking on RTE's Morning Ireland, the minister added that "the people who I represent are the taxpayer and the commuter and if this kind of stuff goes ahead the LUAS will be wrecked".
Luas drivers have staged four days of stoppages in the past fortnight, and plan another strike on St Patrick’s Day in a dispute over pay.
Talk of the planned meetings come as it appears relations between the company and drivers has deteriorated, with Luas operator Transdev accusing SIPTU members of systematically orchestrating the taking of toilet breaks as part of a work-to-rule, resulting in disruption and delays to services.