The National Union of Public Workers (NUPW) is warning Sanitation Service Authority (SSA) employees looking to defect to another trade union, that such a move could be a major setback to having their outstanding grievances resolved.Scores of SSA workers have broken ties with the NUPW in favour of the Caswell Franklyn-led Unity Workers’ Union (UWU), claiming unsatisfactory representation in having their outstanding concerns addressed.However, on Friday General Secretary of the union Richard Greene had some good news for those who remain under the NUPW umbrella.Greene said the SSA board has agreed in principle to support the workers’ demands for increases in hazard pay and washing allowance.“The board has supported it in principle to grant it to the workers, but it now has to get approval from the Ministry of the Public Service. The board can’t grant it on its own.”