The protesting doctors continued to work while fasting.
They will hold a peaceful protest in front of the residence of Union Health Minister J P Nadda seeking a conversation with him over the issue.
"We conveyed the message about the side-effects of working empty-stomach in high-risk areas like the hospital setting but unfortunately we did not receive any response or a or a tweet from a minister," AIIMS resident doctors' association president Harjit Singh Bhatti said.
The doctors had alleged that revised allowances under the Seventh Central Pay Commission (CPC) had been implemented in other central government hospitals including the RML Hospital and Safdarjung Hospital and autonomous institutes such as the Chandigarh-based PGIMER, but doctors at the AIIMS were yet to get the benefits.
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They were joined by the nurses' union, officers' association, society of young scientists, students' union and karamchari union among others.
The resident doctors, who had on October 24 held a protest, have also sought the prime minister's intervention in the issue.
In a letter to Prime Minister Narendra Modi, the AIIMS Resident Doctors Association (RDA) said even one-and-a-half years after the implementation of the commission's recommendations and four months of allowance approval in other medical institutes, the AIIMS doctors here still did not get the revised pay because of administrative lapses.