If the contract doesn't specifically name means of severing the relationship, arbitrarily terminating the contract is being in breach and opens you to litigatio

If the contract doesn't specifically name means of severing the relationship, arbitrarily terminating the contract is being in breach and opens you to litigation. Even in non at-will jurisdictions you can end an employment relationship whenever you want, you just have to follow the rules established by legislation to do so (notice or in lieu, just cause, etc)