Even before a start-up company does its first day of business, there are many legal pitfalls that can be avoided if addressed early and aggressively. With planning and attention to detail, these potential pitfalls can be effectively managed. 1. Exercise caution when leaving employer.If you previously worked for another employer, make sure you know what you've signed as an employee. Often, employers will have employees sign agreements that may restrict an employee's rights even after the employee is no longer with the business. Assignment of invention agreements, non-compete and non-solicitation agreements and confidentiality agreements are often used by employers to …