§ 13-j. Medical or surgical treatment by insurance carriers and
employers. (1) An insurance carrier shall not participate in the
treatment of injured workers, except as provided in paragraph five of
subdivision (i) of section thirteen of this article and subdivision
seven of section thirteen-a of this article and except, that it may
employ medical inspectors to examine compensation cases periodically,
while under treatment, and report upon the adequacy of medical care, and
other matters relative to the medical conduct of the case, a copy of
which report shall be filed directly with the chair within ten days, and
that it may maintain rehabilitation bureaus operated by qualified
physicians if authorized by the chair in accordance with section
thirteen-c of this article. (2) An employer may maintain a compensation
medical bureau at the place or places of employment, if such bureau is
required because of the nature of the industrial hazards, or the
frequency of injuries to employees arising out of industry. Such bureau
or bureaus shall be authorized and licensed pursuant to section
thirteen-c, and their use by an injured employee shall be optional in
accordance with the provisions of section thirteen-a.