Parliamentary staff will be able to see an on-site doctor under a new move by Commons Speaker Sir Lindsay Hoyle.
Commons staff and people working for MPs will now have the same access as politicians to NHS treatment in the Palace of Westminster.
Sir Lindsay said the move brought Parliament into the modern era, in line with places such as the US Congress, KPMG and the London School of Economics.
“Our staff are incredibly loyal, and many put in very long hours, which means it’s near on impossible for them to get back in time to keep an appointment before their local surgery closes,” he said.
“Rather than colleagues feeling they must take a half day, or full day off work to see their GP – who may be a two-hour commute away – it makes a lot of sense for there to be one here on the estate.
“In normal times, you can go to the gym here and you can eat a meal – but you can’t see a doctor when you need to. From this week you can.”
The Speaker said he was keen to prevent staff from ignoring health issues due to the coronavirus pandemic.
The service will deal with complaints at work, such as earache, abdominal pain, respiratory or stress-related problems and falls.
Sir Lindsay said: “I really want this service to pick up people who have fallen through the cracks, or who are worried that something they have might be more serious.”
The move comes 17 years after MPs were given access to an off-site NHS service.
The US Congress has had a doctor responsible for the health and safety of members of the US House of Representatives, the Senate, the Supreme Court, staff, security personnel and dignitaries since 1928.