Work email is for work, you should use your personal email to apply individual validation. If your company has applied organization validation, then you will totally be banned to use your work email to apply for individual validation. And in the case that your company hasn’t apply organization validation, then you are free to use the work email for individual validation (not recommended), but later when your company has applied for organization validation, you will be noticed to change your email address for your individual validation, otherwise you can’t get your V3 identity certificate.
That is to say, one email can only be one identity, personal identity or organization identity. If your company does not have an enterprise email account and uses a public free email address as a business email address and personal email address, you will need to re-apply for a free email address for business to apply for organization validation.