Is there Zakah due on a sum collected from a group of single employees?

Q: We are the committee responsible for serving cooked food to the security forces in the Diplomatic Quarter in Riyadh. We are responsible for deducting a fixed monthly sum from each soldier and officer in the force, according to their desire and in accordance with the orders and instructions issued by the competent authorities. (Part No. 8; Page No. 248

A: If the contribution of each of the individuals reaches the Nisab (the minimum amount on which Zakah is due) and one Hawl has passed on it, Zakah becomes due on it.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.