You can invest in futures, and there are no corresponding restrictions on bank employees. The Basic Standards for Banking Practitioners stipulates as follows:
(1) Banking employees shall consciously resist insider trading, and shall not use insider information to seek personal interests, nor tip off information to others or pass on insider information or suggest others to engage in transactions involving insider information. Even if the bank employees don't get any financial benefits from the told person, it is against the law.
(2) Banks prohibit employees from trading any securities (including stocks, convertible bonds, options, bonds, subordinated bonds and any stock index derivatives including these securities) when they have significant non-public information (inside information) in any business activities. This regulation applies not only to securities issued by banks, but also to securities issued by bank customers who know inside information because of their working relationship.
(3) The employees of the Bank, who are directors, supervisors and senior managers of the Bank, sell the securities of the Bank within six months after buying them, or buy them within six months after selling them. The proceeds from these transactions belong to the Bank and shall be recovered by the board of directors according to law.