The strike includes 400 tanker drivers at Certas Power, a major provider to Sandringham, the place the Royal household historically spends a number of weeks over Christmas and New Yr.
Unite, the union representing the drivers, mentioned the walkout might depart the King and Queen Camilla, 78, going through a “chilly Christmas.”
Drivers plan to stroll out for 15 days between December 22 and January 5 over a pay dispute.
The royal household is anticipated to depart for Sandringham this weekend.
Greater than 40 relations, together with the Prince and Princess of Wales, each 43, can be current, with William and Kate staying at Anmer Corridor throughout the property.
The property additionally accommodates St Mary Magdalene Church, the place the household attends Christmas Day service, and Marsh Farm, set to turn out to be the residence of Andrew Windsor, 65, following his current royal exile.