Tesla's Nevada Gigafactory is on schedule, the car maker said this week, despite reports that construction had been delayed.

The Reno Gazette-Journal last week cited union job postings that said the "Tiger Project"—an early code name for Tesla's Gigafactory—had "been cut back by 80 percent at this time."

The Gazette-Journal pointed to design plan changes as the reason for the cutbacks, but said this delay was "more of a short-term hiccup that should not affect the project long term."

Tesla spokeswoman Alexis Georgeson told PCMag, however, that "construction is progressing and the Gigafactory is on schedule."

Citing a non-disclosure agreement with Tesla, the International Brotherhood of Electrical Workers (IBEW) and Building & Construction Trades Council of Northern Nevada declined to provide specifics about the alleged changes.

"I can confirm that there has been a reduction in hours and that's all I can say," Paul McKenzie, secretary and treasurer of the Building & Construction Trades Council, told the Gazette-Journal.

Tesla in July announced plans to build the Gigafactory, in partnership with Panasonic; Tesla will prepare, provide, and manage the land, buildings, and utilities, while Panasonic manufactures and supplies the cylindrical lithium-ion cells.

Nevada was selected to house the $5 billion plant in September, promising to employ 6,500 workers and produce 500,000 lithium-ion battery cells annually over the next six years.

By building the world's largest and most advanced battery factory, Tesla is expected to drive $100 million into the Silver State over the next two decades. It also means Tesla will get more than $1 billion in tax breaks, among other perks.

Construction on the 10-million-square-foot plant has already begun, according to the Gazette-Journal, which pointed to the erection of a $15 million steel structure on site.