OSHA has previously cited the company in 2010 and 2011 for similar hazards at facilities in Grove City, Ohio, and Syracuse, N.Y.
The company has been placed in the Severe Violator Enforcement Program, OSHA announced.
With the iconic Paris tower's first floor renovation completed, most of the coverage and commentary has focused on its new glass floor.
The seminar will be held on Saturday, November 8.