Charles, who is first in line to the throne and celebrates his seventieth birthday later this year, was described as a demanding boss by a source claiming to close to palace staff.
Despite his jolly public demeanour, the Prince is said to be very precise in his orders, and is reportedly aware he is less popular than the Queen, according to the Daily Mail.
A source told The Express: "For some of those who serve in his household, he's difficult to work with.
"You've got to do what he says, he is very hard work," they added of the royal.
"Prince Charles does not like some palace staff. When the time comes for him to be king, he will make some people redundant."
And according to the insider, Charles is aware he is not as popular as his mother, following a 2017 YouGov poll which supported this theory.
The report comes just a day after the Queen celebrated her 92nd birthday, joined by Charles and much of the royal family, including Prince Harry's fiancée Meghan Markle.
The Prince of Wales raised three cheers at the Royal Albert Hall when he wished his mother a happy 92nd birthday as a star-studded celebration came to a close.
Addressing the Queen, he first referred to her as "Your Majesty", before switching to the more familiar "Mummy", prompting the monarch to roll her eyes and smile.
