An ExxonMobil spokesperson said the man was an employee of KQCJV, a landowner company that was supplying materials for construction works to MCJV - the joint venture between McConnell Dowell and Consolidated Contractors undertaking the Komo airfield development.
"The police and other appropriate authorities have been notified and an investigation will be undertaken," the spokesperson told PNGIndustryNews.net.
"Along with others in the local community, we are providing support to the family of the worker.
"We send our heartfelt sympathies to the family."
While the spokesperson did not confirm how the accident happened, according to the ABC, the man was run over by a front-end loader.
The completion of the Komo airfield will improve logistical support to other PNG LNG project sites and is consequently important to hitting the schedule of first LNG exports in 2014.
A massive landslide near the Tumbi limestone quarry used to supply low-grade aggregate for construction efforts at the Komo Airfield buried dozens of people on January 24 and also blocked off a key portion of the road between the Nogoli camp and the project's Hides gas conditioning plant site.
As of last week, the project was trying to get full construction activities back to normal.