§ 202. Protection of the public and of persons engaged at window
cleaning and cleaning of exterior surfaces of buildings. The owner,
lessee, agent and manager of every public building and every contractor
involved shall provide such safe means for the cleaning of the windows
and of exterior surfaces of such building as may be required and
approved by the board of standards and appeals. The owner, lessee,
agent, manager or superintendent of any such public building and every
contractor involved shall not require, permit, suffer or allow any
window or exterior surface of such building to be cleaned unless such
means are provided to enable such work to be done in a safe manner for
the prevention of accidents and for the protection of the public and of
persons engaged in such work in conformity with the requirements of this
chapter and the rules of the board of standards and appeals. A person
engaged at cleaning windows or exterior surfaces of a public building
shall use the safety devices provided for his protection. Every employer
and contractor involved shall comply with this section and the rules of
the board and shall require his employee, while engaged in cleaning any
window or exterior surface of a public building, to use the equipment
and safety devices required by this chapter and rules of the board of
standards and appeals.

The provisions of this section shall not apply to (1) multiple
dwellings six stories or less in height located anywhere in this state;
nor to (2) any building three stories or less in height in cities, towns
or villages having a population of less than forty thousand; nor to (3)
the windows or exterior surfaces of any building which may be exempted
under any rule adopted by the board of standards and appeals.

The board of standards and appeals may grant variations pursuant to
the provisions of section thirty of this chapter. All existing
variations heretofore made by the board relating to the cleaning of
windows are hereby validated and continued in full force and effect
until amended or terminated by the board.

The board of standards and appeals may make rules to effectuate the
purposes of this section.

Notwithstanding any other law or regulation, local or general, the
provisions of this section and the rules issued thereunder shall be
applicable exclusively throughout the state and the commissioner shall
have exclusive authority to enforce this section and the rules issued
thereunder.