A doctors' watchdog has revealed it has concerns about the A&E department at Leicester Royal Infirmary.
In a report about emergency departments, the General Medical Council (GMC) said it was concerned patient safety was being put at risk because of problems with staffing and poor support offered to junior doctors.
The University Hospitals of Leicester NHS Trust, which runs the A&E department at the infirmary, is among 16 listed by the GMC as being of concern.
These relate to poor access to education for staff as well as the workload and intensity of work carried out by doctors.
Professor Azhar Farooqi, co-chairman of the Leicester City clinical commissioning group responsible for providing city health services, said staff shortages was one of the issues facing the department, which has struggled for months to see and treat patients within the Government's four-hour target.
Mr Farooqi said: "We do expect Leicester's hospitals to resolve this issue.
"We are not talking about super-specialist staff but nurses and junior doctors.
"Lesser hospitals such as in Kettering and Northampton don't seem to have the same recruitment problem.
"If necessary, Leicester's hospitals will need to look at recruiting from overseas."
Niall Dickson, chief executive of the GMC, said: "The review team has made a number of recommendations to improve the quality of training and we will continue to work with NHS trusts, senior doctors, and others at a local level to ensure that high standards are met."
Jonathan Acheson, emergency consultant and post-graduate education lead in the LRI Emergency Department, said: "Our junior doctors work very hard, as we have one of the biggest and busiest emergency departments in the country."
"We took on board the comments made at the visit in March last year by the Deanery and have put in place a number of changes to bring about improvement in our workload and intensity.
"The Deanery, GMC and College of Emergency Medicine visited again in October and again in March and were pleased to see we had made substantial progress in our three-year medical education improvement project.
"We will continue to work closely as a team to bring about further improvements."