Banffshire and Buchan Coast MSP Stewart Stevenson has called on the Scottish Parliament urging it to seek assurances the move would be axed.
In a motion to parliament, Mr Stevenson has warned the move will have a “disproportionate negative impact” on the Scottish economy by creating a huge decline in the working age population.
There are also fears it would cause staff shortages in key areas including textiles, hospitality, sales, seasonal agriculture and vital social care services.
It comes after a recent report from the Expert Advisory Group on Migration and Population found that less than 40% of workers in the Aberdeenshire Council area and less than 30% of workers in the Moray Council area earn above the £30,000 threshold.
Commenting, Stewart Stevenson MSP said:
“The isolationist migration policy proposed by the Tories is totally out of step with Scotland’s needs - freedom of movement has enriched both our workforce and communities here in the North-East.
“Setting a £30,000 threshold will drive people away from Scotland, damaging our local economy and hammering vital public services - our social care sector in Aberdeenshire simply wouldn’t function without migrant labour.
“The North-East relies on steady migration from both the EU and elsewhere to support industries including fish processors, tourism and hospitality.
“It is clear from the Expert Advisory Group that the impact of a £30,000 threshold for workers who wish to come to Aberdeenshire and Moray would be significantly challenged by this base level of income.”
“Setting a £30,000 threshold will drive people away from Scotland, damaging our local economy and hammering vital public services - our social care sector in Aberdeenshire simply wouldn’t function without migrant labour.
“The North-East relies on steady migration from both the EU and elsewhere to support industries including fish processors, tourism and hospitality.
“It is clear from the Expert Advisory Group that the impact of a £30,000 threshold for workers who wish to come to Aberdeenshire and Moray would be significantly challenged by this base level of income.”