Joanie recognizes that the board and CEO are particularly worried that individuals will post negative information about the company on company-sponsored social media sites. Joanie create what specific set of policies in response for how to contend the employees?

Should create a non disclosure agreement policy

Explanation:

This is a legally binding agreement that mandates parties to a contract in this case between an employer with an employee, in which the employee agrees not to disclose publicly or to any one negative information about the company that is deemed confidential (secret or private), and that may affect the company negatively.

Thus, to reduce the worries of the board and CEO, Joanie should create a non disclosure agreement signed by employees.