The protest that started shortly after noon saw members of the CWU carrying placards and chanting slogans to the beat of tassa.
CWU President, Joseph Remy, said the protest was held to highlight issues at the Telecommunication Services of Trinidad and Tobago.
He said there have been ongoing complaints by workers in relation to safety.
Mr. Remy said that workers at Cipero have downed tools over nine months due to lack of safety clothing and the Occupational Safety and Health Agency has been dragging its feet.
The CWU President said protest action will continue until someone hears the plight of TSTT workers.