An exclusivity clause in a founder’s contract requires you to dedicate your time and resources solely to the startup or company you’re joining. This means you may be restricted from working with other businesses, investing in competitors, or even pursuing side projects—sometimes for the duration of your involvement and, in some cases, even after you leave.
These clauses are common in founders’ agreements, co-founder agreements, and shareholder agreements. They’re intended to ensure that founders are fully committed, but they can also create significant limitations if not carefully reviewed and negotiated.