The Suicidal Worker is a worker from the Patrol Investment Group (PIG). They are governed by the DBP Security building in Ocean Beach. They patrol areas like the North Point Mall, Escobar International Airport and various areas around it, Starfish Island, and Leaf Links Country Club. PIG are also hired for private protection or defense services.
Events of Grand Theft Auto: Vice City
During the mission Phnom Penh '86 in GTA Vice City, Lance heads to Prawn Island via a helicopter, so Tommy would be able to shoot gang members in aerial mode. During the ride to Prawn Island at one point, Lance passes with the helicopter under the Links Bridge, which connects the two main islands of Vice City. If the player pans the camera backwards to the helicopters' tail as soon as the helicopter passes under the bridge, the player will see a Patrol Investment Group security guard jump off the bridge and lands in the water. The reason this worker committed suicide is maybe due to he has lost his work after the mission Riot.
Some players have speculated that the falling worker could be simply the result of a pedestrian spawn glitch, or perhaps an error in the ped's path. Despite this, it is widely accepted that the Suicidal Worker is just an Easter egg left in the game by Rockstar.