In a speech last week, Hunt said there was a "Monday to Friday culture" in some parts of the NHS which has had "tragic consequences" on the numbers of deaths each year. Hunt said he was ready to impose new contracts as part of a push to deliver a seven-day working NHS.
Doctors reacted by tweeting pictures of themselves in work over the weekend with the hashtag #ImInWorkJeremy, which was launched by campaign group Keep Our NHS.
The British Medical Association confirmed that it did not spearhead the campaign but did support it by, for example, retweeting the hashtag.
Dr Laura Land then posted an angry letter to Hunt on her Facebook, which went viral.
In the letter, she wrote: "Perhaps let someone who knows what they're talking about and actually listens to us take over. If you don't Jeremy, you'll be going down in history forever as the man that killed the NHS. Could you live with all that blood on your hands?"
She described how doctors skip lunch to ensure patient paperwork gets done and said that the NHS is "at breaking point". She ended her note saying: "Farewell. I'm off to do a 12 hour night shift. Enjoy your work-free weekend, your Parliament-free summer (recess is July 21 to September 7 correct?) oh, and your cheeky 10% pay rise."
On Saturday Hunt responded to the Twitter storm thanking the doctors and using the hashtag:
To drs on shift 2day: thx 4 ur hard work. Now we need 2 reflect that professionalism wth modern contract 2 make NHS safer!#ImInWorkJeremy— Jeremy Hunt (@Jeremy_Hunt) July 18, 2015
Hunt said he would give the BMA six weeks to negotiate changes to working contracts.