Your employer can only stop you from joining a competitor if your contract contains a valid, reasonable non-compete clause protecting a legitimate business interest. Courts will not enforce a clause that merely tries to prevent ordinary competition. If your employer believes you've breached an enforceable clause, they can apply for an injunction to stop you working for the competitor and claim damages.
Quick Question
Can My Employer Stop Me From Joining a Competitor?
The short answer
Quick answer
Your employer can only stop you from joining a competitor if your contract contains a valid, reasonable non-compete clause protecting a legitimate business interest.
General information only. This answer does not constitute legal advice. The appropriate response depends on the facts and circumstances of each matter.