Looks like you have 30 days after he leaves.
Electricians
Apply for a New Electrical Contractor License
On this page:
Master Electrician of Record
Insurance Requirements
Application and Fee
Applicants with Criminal Convictions
Electrical contractors are licensed to engage in the business of designing, installing, erecting, repairing, or altering electrical wires or conductors to be used for light, heat, power, or signaling purposes.
This includes the installation or repair of ducts, raceways, or conduits for the reception or protection of wires or conductors and the installation or repair of any electrical machinery, apparatus, or system used for electrical light, heat, power, or signaling.
Master Electrician of Record
You must employ a licensed Master Electrician to apply for an Electrical Contractor license. The Master Electrician may also be the business owner.
A Master Electrician may only be assigned to a single Electrical Contractor, unless the Master Electrician owns more than 50 percent of the electrical contracting business.
Changing Your Master Electrician of Record
When your Master Electrician of record leaves employment with your business, you must notify the department and designate a new Master Electrician of record within thirty business days from the date of separation.
You may submit this notification by mail on an Electrical Contractor Notice of Change.