Md. Code, Health - General § 19–1911

(a) An employer providing a reference for employment under this subtitle and acting in good faith may not be held liable for disclosing any information about the job performance or the reason for termination of employment of an employee or former employee of the employer.

(b) An employer providing a reference under this subtitle shall be presumed to be acting in good faith unless it is shown by clear and convincing evidence that the employer:

(1) Acted with actual malice toward the employee or former employee; or

(2) Intentionally or recklessly disclosed false information about the employee or former employee.