Kitchen staff at a £17,000 per year private school in Lee have announced strike action throughout September and October in a row over back-pay.
The kitchen workers allege they have not been paid for two weeks each year over the last decade and are demanding to be repaid £5,000 each.
The walkouts will take place on September 23 for 48 hours, September 30 for 72 hours and October 7 for another 48 hours.
Colfe’s School fees range from £13,167 per year for Nursery and Reception and £17,604 for secondary school.
Onay Kasab, regional officer at Unite union, said: “Our members are angry that they been cheated continuously of their rightful pay over the past decade.
“These long-serving and dedicated kitchen staff have been underpaid by an estimated £5,000 plus for each individual over that time.
“In addition, the company has now proposed to reduce the number of weeks it pays the kitchen staff by a further two weeks per year from 42 to 40. They work 20 hours a week.”
He called on CH & Co Catering Ltd to pay the money back to and bring kitchen staff in-house.
Kasab added: “There is a sour taste in the mouth between the low wages that our members receive and the high fees that are paid to attend this elite institution.”
A Colfe’s spokeswoman said the school will not intervene in the dispute between workers and CH & Co Ltd as it is not the direct employer of the kitchen staff but added: “We will nonetheless continue to discuss the concerns raised with CH & Co.”
A CH & Co spokeswoman said: “We are working with Unite as we are keen to resolve this situation. We are currently waiting on information from Unite and once we receive this, we hope to reach a swift and satisfactory conclusion.”