"We are low paid workers. We've had a pay freeze for two years" says Dave Warren, from the PCS union.
"This year, there's a one percent increase available, which is a joke in itself, but apparently the Government wants to tie that to the loss of our terms and conditions. We find that totally unacceptable."
More top news
Through this evening and overnight it will remain cloudy with some persistent rain and drizzle by dawn.
A couple from Wales, who moved to South Africa to live 40 years ago, have been killed on their farmland estate there, police have confirmed.
Our Valleys Correspondent Hannah Thomas has been spending time discovering why the people who live in the Valleys love their communities.