Gov. Schwarzenegger today attended a memorial service for an 18-year-old farmworker who died after collapsing in 100-degree heat May 14.

Maria Isabel Vasquez Jimenez was working in a Farmington vineyard in San Joaquin County when she took ill. She was taken to a medical clinic and then to Lodi Memorial Hospital where she died two days later. Doctors found she was two-months pregnant at the time of her death. Jimenez's uncle said she had begun working at the vineyard just three days before her collapse.

California's Occupational Safety and Health agency had issued a heat-danger warning to employers the day Jimenez died. The farm labor contractor who hired Jimenez, Merced Farm Labor, is now being investigated by Cal OSHA.

Schwarzenegger called the teen’s untimely death a warning of the danger hot weather can impose.

"Maria’s death should have been prevented, and all Californians must do everything in their power to ensure no other worker suffers the same fate," the governor said in a prepared statement. "We have put in place employer regulations to prevent heat illness, and I cannot say strongly enough that they must be followed. Employers must provide water and heat illness training, allow ill workers to take breaks in the shade and have an emergency plan if someone falls ill. Where there are violations of these regulations, we will prosecute employers to the full extent of the law. There is no excuse for failing to protect worker safety.

"There are things workers can do as well—make sure you are drinking plenty of water, take breaks before you are feeling sick and keep an eye out for those working around you, as well if they are showing signs of heat illness, such as headache, nausea and dizziness.

"Maria and I send our thoughts and prayers to Maria Jimenez’s family and our hopes that we will work together in California to prevent this from happening to anyone else."