Nine contractors at the newly constructed Oasis Park Square residential development in Doral, Fla., including one window-installation firm, are facing a total of $152,000 in proposed penalties after inspectors from the U.S. Department of Labor’s Occupational Safety and Health Administration (OSHA) found a number of serious safety violations at the work site.

OSHA inspectors first toured Oasis Park Square in November 2014, and this week the agency issued citations to Unity Windows Inc., of Medley, Fla.; Shoma Alliance Management Corp., the project manager; Garmon Construction Corp.; Zavala & Associates Inc.; Blue Panther Roofing & Construction Corp.; PP All Corp.; Fast Carpentry 1 Inc.; and New World Masonry Inc.

“Shoma Alliance Management Corp. and its contractors exposed their employees to numerous safety hazards or permitted multiple risks, including falls that could have resulted in death or serious injury,” said Condell Eastmond, director of OSHA’s Fort Lauderdale Area Office, in a statement. “Developers and general contractors are responsible for the safety of employees at their work sites. OSHA will continue to hold them accountable for the employees’ safety.”

According to OSHA documents, Unity Windows received two citations totaling $10,000. Both were for failing to protect workers from falls.

This isn’t Unity’s first run-in with OSHA. In 2007, the company was issued three citations related to hazard communications, power tools and electrical hazards.

Fall protection on the construction site has been a hot topic of late in the industry, and earlier this month, OSHA held its second annual two-week National Fall Safety Stand-Down campaign.

“The cost of building our nation and economy cannot be the lives of its workforce, and that’s what this Stand-Down is all about,” Dr. David Michaels, assistant secretary of labor for occupational safety and health, said in a statement. “These deaths are preventable if we plan ahead, provide workers the right equipment and train each and every one of them how to use it.”