Maryland Labor and Employment Section 8-205
§ 8-205.
  Work that an individual performs under any contract of hire is not covered employment if the Secretary is satisfied that:
    (1)   the individual who performs the work is free from control and direction over its performance both in fact and under the contract;
    (2)   the individual customarily is engaged in an independent business or occupation of the same nature as that involved in the work; and
    (3)   the work is:
      (i)   outside of the usual course of business of the person for whom the work is performed; or
      (ii)   performed outside of any place of business of the person for whom the work is performed.