Maryland Labor and Employment Section 9-218
§ 9-218.
  (a)   (1)   This section applies to an individual who is an owner operator of:
      (i)   a Class F (tractor) vehicle, as described in § 13-923 of the Transportation Article; or
      (ii)   except as provided in paragraph (2) of this subsection, a Class E (truck) vehicle, as described in § 13-916 of the Transportation Article, including a Class E (truck) vehicle described in § 13-919 of the Transportation Article.
    (2)   This section does not apply to the owner operator of a vehicle registered as a Class T vehicle under § 13-920 of the Transportation Article.
  (b)   An individual who is an owner operator is not a covered employee if:
    (1)   the individual and motor carrier make a written agreement for permanent or trip leasing;
    (2)   under the agreement:
      (i)   there is no intent to create an employer-employee relationship; and
      (ii)   the individual is paid rental compensation; and
    (3)   for federal tax purposes, the individual qualifies as an independent contractor.
  (c)   (1)   A motor carrier who enters into an agreement under subsection (b) of this section is considered a principal contractor under § 9-508 of this title.
    (2)   An individual who is an owner operator and enters into an agreement under subsection (b) of this section is:
      (i)   considered a subcontractor under § 9-508 of this title;
      (ii)   for purposes of being a subcontractor, not considered a covered employee of the entity that the individual operator owns; and
      (iii)   not entitled to compensation from a principal contractor under § 9-508 of this title.
  (d)   An individual who is an owner operator and enters into a written agreement under subsection (b) of this section shall provide proof of insurance for any covered employee of the individual as may be required by this title.