It has focused on hiring young people, advertising its ability to provide them with their first job and to have “transformative social impact” in Latin America.

The company is led by Woods Staton, a Colombian-born businessman called “El hombre Big Mac” by some Colombian press. He has ranked as one of the wealthiest people in the world.

Ms. Porras Inga, 18, aspired to be a lawyer and judge. She began working at McDonald’s about three months ago in an effort to pitch in with bills at home, according to her family. She was her mother’s only daughter. She met Mr. Campos Zapata in school, and they had dated for a time, her family said.

Her mother said that after receiving news of her daughter’s death, she rushed to the locale, where, from afar, she could see wet floors, loose cables and her daughter’s body. The teenager did not appear to be wearing boots, gloves or other safety equipment, she said. She urged McDonald’s to make sure its employees, particularly young ones with little work experience, “receive what they need to stay safe."

“Don’t let them die,” she said. “Take care of them.”

Ms. Porras Inga’s family believes she was washing the floor when she hit a loose wire.

In Peru, the deaths have quickly become part of a larger conversation about workplace conditions.

Peru has seen tremendous, albeit unequal, growth in the last decade, and many in the nation of more than 30 million have clamored to make it into the nation’s expanding middle class.