During her weekly programme, Yingluck said she had presented a bouquet to His Majesty the King through the royal representative at Siriraj Hospital. She said she had learned that His Majesty's health is gradually improving.
On his birthday, His Majesty the King would grant a public audience at the Chakri Throne Hall in the Grand Palace at 10.30am.
The royal guards from the Royal Thai Armed Forces would take an oath of loyalty on the same day, she said.
Meanwhile, light-and-sound shows and exhibitions would be held from Saturday to December 9, Yingluck said. Candle-lit ceremonies will take place nationwide on December 5.
The premier said that as part of King Bhumibol’s birthday celebration, Bhutanese King Jigme Khesar Namgyel Wangchuck had allowed Thailand to borrow a Buddha relic from Bhutan so that Thai people could pay homage.