THE Construction, Forestry, Mining and Energy Union has given notice to Bechtel of its intent to take protected industrial action on Thursday, August 7.
BG Group, parent company to QGC and responsible for the Queensland Curtis LNG project, made the announcement on Friday night.
The CFMEU is one of the four unions representing workers at the QCLNG plant on Curtis Island.
The announcement of industrial action was made hours after BG Group announced its second quarter results.
BG Group said it was not aware of the scope or duration of the proposed industrial action.
"As such, there remains no change to the current expected first LNG date from the QCLNG project in the final quarter of 2014," a BG statement said.
"BG Group will update the market if any potential industrial action, or other material event, is likely to negatively impact the current schedule for first LNG."