When the productivity of the workers in a Firm increases what would happen to the demand for labour in that firm if the quantity demanded for the product does not change?

The demand for labour would decrease because it will be costly for the business keeping the workers.

Explanation:

If the quantity demanded for the product does not change while workers productivity increase this will make the quantity demanded for labour decrease because its costly to keep workers if the consumers demand does not change this means that the business is not making any profit.