What is the ruling on the wages of employees and their share of the profits of a telecommunications company that deposits its cash surplus in banks in exchange for interest?

If the company's work involves permissible matters according to Sharia, then there is no objection to working for it, and the earned wage is lawful. As for the profits, whatever portion of them comes from permissible activities (such as telecommunications) is lawful, but whatever portion comes from usurious bank interest is unlawful and must be avoided.