Telstra's Elizabeth, Sydney offices loomed overhead as the protest kicked off on Tuesday morning at 10am.
Protesting workers and union staff gathered in Hyde Park below, at the War Memorial end of the park.
These notices were posted at the doors to Telstra's facility on Elizabeth St.
The Communications, Electrical and Plumbing Union (CEPU) brought its own branded vehicle.
Workers signed Christmas cards to Telstra chief executive Sol Trujillo expressing their displeasure at the company's behaviour.
A number of workers lampooned Trujillo for the Federal Government's decision yesterday to kick the telco out of the bidding process to build the National Broadband Network.
"Where is the Christmas present for your workers?" one Telstra staffer asked Trujillo in Spanish. "Merry Christmas to you and your family," they added.
Trujillo's pay package also came under fire.
Workers catching a breather.
Water, lamingtons and loudspeakers were in plentiful supply on the hot summer morning.