"An independent care provider has expressed "serious concerns" to the Western Trust about planned changes to domiciliary care in the north west.
BBC News NI understands the changes relate to the areas some care workers work in being changed.
Some people who rely on carers coming into their homes have received letters from the trust stating that changes will be introduced in the new year.
Clients also received an apology for any "upset or confusion" caused.
Connected Health, an independent care provider, told the trust it was concerned about the impact these changes could potentially have on clients and their families."