Hundreds of Google workers have called for the company to pay Temps, Vendors and Contractors (TVCs) the full wages they are legally entitled to, as well as provide back pay for the period they were underpaid.

Earlier this week, it was revealed that Google underpaid thousands of temporary workers in 16 countries by at least $100 million. The company discovered it was breaking pay parity laws in those countries, but tried to cover up the failing, rather than pay workers a fair wage.

"Google has the resources to treat all workers equally but it chooses not to do so in favor of further hoarding its already-astronomical financial resources," the Alphabet Workers Union said.

"Their stated strategy to keep TVCs in a second class depends on our collective silence and isolation."

The union said that Google should pay the TVCs back pay, but also provide pay parity in countries like the US, where laws do not exist to enforce such remuneration.

AWU also said that it "demands that Google create an immediate path to permanent employment for temporary workers and end its two-tiered perma-temp system."

The union shared a petition that has been signed by hundreds of Google employees, as well as at contractors Adecco Modis and G4S.