Everyone? Why would you not have one? If you're cofounders shooting ideas, just write down what you've agreed on a napkin at least before writing code. If you'

Everyone? Why would you not have one? If you're cofounders shooting ideas, just write down what you've agreed on a napkin at least before writing code. If you're joining as an employee, even more reason to have an agreement in place, for both parties protection. Otherwise the code you write doesn't even belong to the company, as shown in this case.