Employee Handbooks
Every employer should have one. All the federal and state employment laws protect EMPLOYEES. But Employers have rights too. The best legal way to do this is a written handbook signed by all employees and new hires. The job offer should be contingent on their signing it,before they start work.
Along with the handbook, employees should sign an Arbitration Agreement to resolve any job or termination issues. It is a faster way both you and the employees than a long tedious court jury trial.
Your confidential/proprietary information is a valuable asset. Employees should also sign a confidential/proprietary information agreement to protect you and your clients/customers.
Courts have upheld both Arbitration and Confidential Info Agreements.