NHS leaders are bracing themselves for a 72-hour strike by junior doctors which begins at 07:00 on Monday.
It's not hard to understand why they're so concerned: junior doctors make up 45% of the medical workforce, two thirds of them are members of the BMA union which is organising the strike, and they're planning on walking out of emergency as well as planned care.
Their action is likely to affect every region in England.
Consultants and other senior doctors are being drafted in to provide cover. Lots of planned appointments are set be postponed - it's not yet clear how many.
Junior doctors say they have no choice but to take this action which, they say, is as much about feeling undervalued and overworked as it is about pay.
You can read more or watch this report about why people are taking strike action, and below you can find information on how it could affect you.
Upcoming strike action
SUN19FEBBorder Force
MON20FEBAmbulance staff
Read more: Why are ambulance staff striking?
Border Force
TUE21FEBAmbulance staff
Read more: Why are ambulance staff striking?
Teachers in Northern Ireland
Read more: NI teachers to walk out for half a day
WED22FEBAmbulance staff
Read more: Why are ambulance staff striking?
THU23FEBThere are currently no national strikes planned for this date
FRI24FEBThere are currently no national strikes planned for this date
SAT25FEBThere are currently no national strikes planned for this date
SUN26FEBThere are currently no national strikes planned for this date
MON27FEBThere are currently no national strikes planned for this date
TUE28FEBTeachers in Scotland
Read more: Teachers' strike dates
WED1MARTeachers in Scotland
Read more: Teachers' strike dates
THU2MARTeachers in Wales
Read more: Teachers reject pay offer
FRI3MARThere are currently no national strikes planned for this date
SAT4MARThere are currently no national strikes planned for this date
SUN5MARThere are currently no national strikes planned for this date
MON6MARThere are currently no national strikes planned for this date
TUE7MARThere are currently no national strikes planned for this date
WED8MARThere are currently no national strikes planned for this date
THU9MARThere are currently no national strikes planned for this date
FRI10MARThere are currently no national strikes planned for this date
SAT11MARThere are currently no national strikes planned for this date
SUN12MARThere are currently no national strikes planned for this date
MON13MARJunior doctors
Read more: Junior doctors to strike
TUE14MARJunior doctors
Read more: Junior doctors to strike
WED15MARJunior doctors
Read more: Junior doctors to strike
Civil servants
Read more: Civil servants to strike on budget day
Teachers
Read more: Teachers' strike dates
London Underground
Read more: London Underground walk out
THU16MARTeachers
Read more: Teachers' strike dates
Rail
Read more: When are the train strikes?
University staff
Read more: Will my lecture be cancelled?
FRI17MARUniversity staff
Read more: Will my lecture be cancelled?
SAT18MARRail
Read more: When are the train strikes?
SUN19MARThere are currently no national strikes planned for this date
More than 36,000 junior doctors are set to strike on Monday, Tuesday and Wednesday in England.
Consultants will be brought in to provide some cover, but the NHS is warning of "major disruption and thousands of patients may face postponements to their treatment" due to the strike.
The NHS advice is to dial 999 in an emergency and turn up to hospital appointments unless you are told otherwise.
Other things to note are:
Junior doctors in England want a pay rise of 35%.
The British Medical Association (BMA) calls it pay restoration after cuts of 26% once inflation is taken into account since 2008.
The 35% rise is needed to make up for the 26% cut, it says.
Junior doctors represent around 45% of the medical workforce in England.
They include those just out of university through to doctors with 10 years of experience so the strike action will have a major impact.
About two thirds of the junior doctor workforce are BMA members.
They are walking out of both emergency and planned care as well as general practice where some junior doctors will be working as GP trainees.
It means NHS bosses are drafting in consultants and other senior doctors to cover them in emergency care, such as A&E and intensive care.
This will lead to the postponing of lots of planned treatment, such as knee and hip replacements.
Junior doctor leaders at the BMA have had meetings with ministers and government officials in recent weeks.
But there have not been formal pay talks.
Ministers have made it clear they are not willing to meet the pay demands of junior doctors.
Instead, the government is concentrating on reaching a deal with the 14 health unions representing NHS staff other than doctors after they suspended their strike action.
Talks were held last week with unions representing everyone from nurses and midwives to ambulance staff and physios.
They have involved discussions about effectively offering staff a bonus for this year on top of a 4.75% pay rise and a more generous increase from April for the 2023-24 year - the government has suggested 3.5%, but unions have made it clear they want more.
Follow Zoe Conway on Twitter
Additional reporting by Nick Triggle and Tom Espiner
How are you affected by the strikes? Are you taking part in strike action? You can email: haveyoursay@bbc.co.uk.
Please include a contact number if you are willing to speak to a BBC journalist. You can also get in touch in the following ways:
If you are reading this page and can't see the form you will need to visit the mobile version of the BBC website to submit your question or comment or you can email us at HaveYourSay@bbc.co.uk. Please include your name, age and location with any submission.
Related Topics