Workers at Eastern Water and Sewerage Company yesterday staged a go -slow.
Company Public Relations Officer Henry Kashoki confirmed the go-slow but indicated that reasons for the industrial action were unclear.
Mr Kashoki however, described the go-slow as illegal because management was completely in the dark as to why the workers decided to take such a move.
He says the workers took the action in the absence of the entire management staff, who were attending the launch of a project at Mwami border post.
Mr Kashoki says management will sit down with the workers to find out their grievances.