2015 New York Laws
SCC - Second Class Cities
Article 6 - (Second Class Cities) DEPARTMENT OF FINANCE
68 - Treasurer and deputy treasurer.

 68. Treasurer  and  deputy treasurer.  The treasurer may appoint, to
  hold office during his pleasure, a deputy and such other subordinates as
  may be prescribed by the board of estimate and apportionment. In case of
  the absence or disability of the treasurer,  or  of  a  vacancy  in  the
  office,  the  deputy  shall discharge the duties of the office until the
  treasurer returns, his disability ceases or the vacancy is  filled.  The
  treasurer  and  deputy  treasurer, before entering upon the discharge of
  the duties of their respective offices, shall each execute and file with
  the city clerk, an official undertaking in such  penal  sum  as  may  be
  prescribed  by  the  common  council. Such undertaking, when approved as
  provided by law, shall have the same force  and  effect,  and  shall  be
  filed  and  recorded  in the office of the county clerk of the county in
  which the city is located in the same manner as is required in the  case
  of an undertaking of a town collector.