The Public and Commercial Services (PCS) union fears that the government will start outsourcing more roles in civil and public services as public sector organisations face reduced budgets.
The PCS aired its views following an announcement by the British Council, which promotes British culture overseas, that it is outsourcing UK roles to India.
The organisation is considering consolidating IT work into a single hub likely to be in India. "Overall job numbers overseas are likely to remain similar, although some hubs will close, and in the UK the number of posts will fall from 185 to around 100 if this plan is approved."
The union said it is not the fact that the jobs will go offshore to India that it objects to, but the fact that public bodies are cutting jobs.
"We do not fear offshoring, we fear that what we will see is more outsourcing in the civil and public services," said a PCS spokesman. "At the end of the day, it is jobs being cut."
He said there are already plans to outsource large parts of the Land Registry as the government tries to cut costs.
Martin Davidson, CEO at the British Council, said in June that the organisation had to cut costs. "We are not immune to the external financial pressures facing everyone today. We must adapt to these realities if we are to safeguard and grow our work."