UNISON has warned of a “significant rise” in reports of unacceptable treatment of migrant care staff by unscrupulous employers.

In a letter to care minister Helen Whately, the union said some of the 58,000 care workers who came to work in the UK in the 12 months to March had faced “shocking abuse”, including huge charges to pay back ‘relocation costs’ if they wish to change jobs.

UNISON general secretary Christina McAnea said: “The government must stop unscrupulous care employers from luring overseas workers under false pretences, only to then exploit and harass them.

“These practices have no place in a modern society. Migrant staff deserve nothing but respect and dignity for coming to look after those who need care the most. This makes the case for why a national care service, that mirrors the NHS, is needed so urgently.”

The union said social care employers often demand migrants to pay upfront fees of up to £15,000 to find a job and housing in the UK but could then end up in poor accommodation and have rent deduced from their wages.

UNISON’s letter to the care minister highlighted the case on one care home employer who chased a nurse for £14,000 after she resigned.

A Department of Health and Social Care spokesperson said: “All employers of international health and care staff must follow the code of practice to make sure staff are recruited ethically and are treated with respect.

“Concerns regarding potentially unethical and illegal employment practices should be reported to the Gangmaster and Labour Abuse Authority who will investigate fully. Employers found to be in breach of the code face prosecution and the possibility of a custodial sentence.

“No staff should face any kind of abuse, especially when raising concerns with their employer. It is unacceptable and staff can contact the Care Quality Commission if they witness or are a victim of malpractice.”