Thousands of overseas health workers and their families will be able to extend their visas for free for a year.
The Home Office said one-year visa extensions will be automatically granted with no fee to eligible NHS staff whose visas are due to expire before October 1 this year.
The change could benefit more than 14,000 frontline workers, including doctors, nurses, paramedics, midwives, occupational therapists and psychologists.
However union leaders warned that the care sector “has been overlooked again” – despite the critical role staff have played during the crisis.
Foreign medics were granted free year-long extensions to their visas last year to help staff the coronavirus pandemic.
Home Secretary Priti Patel said: “The dedication and skill of overseas health and care workers who are leading the UK’s fight against coronavirus is truly extraordinary.
“Thousands of them have helped save countless lives throughout this pandemic and are now playing a vital part in the hugely successful vaccination rollout.
“Our offer of free visa extensions shows how our country values the contributions of these heroes.”
Health workers will still have to complete an online form to verify their identity, which will be corroborated by their employers.
Fees, including the Immigration Health Surcharge, will be scrapped.
Health Secretary Matt Hancock said: “Our overseas health and care workers make such a vital contribution to our health system and have been a key part of the fight against the pandemic.
“They are protecting our loved ones and vaccinating the public so that we can save lives and return to normality.
“To help those staff from overseas, we are extending their visas to provide security while they continue to tackle this virus.”
Unison called on the Government to extend the scheme for all employees in health and care, particularly “the lowest paid who need this help the most”.
Unison’s general secretary Christina McAnea said: “Thousands of NHS workers will be relieved they don’t face hefty bills to continue providing vital services across the UK.
“Many have faced huge stresses and pushed themselves to the limit to treat and look after us all.
“It’s only right the Government looks after them and makes their lives a little easier by granting free visas.”