The union claims that Keolis Amey Docklands (KAD) which operates the line is "bulldozing" new conditions, however, the company said it was "unnecessary".
“Our members on DLR are furious at the way that Keolis Amey are trying to bulldoze in some of the worst working practices and conditions that we associate with the operations of the most cheapskate and anti-union companies in the transport sector. We will not sit back and allow this culture to develop on this key part of London’s transport network," said RMT general secretary Mick Cash.
“The company should not underestimate the anger of the workforce and KAD's abject failure to address these issues has left us with no option but to ballot for action. The union will be available for talks with the company this week."
KAD managing director Kevin Thomas said: “We are disappointed that the RMT union plan to ballot our employees. This action is unnecessary and we are working to ensure we continue to deliver a normal and reliable service to DLR passengers every day. We continue to meet with the union to actively seek a resolution to the issues they have recently raised.”
The ballot will close on 22 October. No dates are yet scheduled for action if members vote in favour.