N.Y. Comp. Codes R. & Regs. tit. 20, § 5-3.1
(a) Where a taxpayer is allowed a credit pursuant to Subpart 5-2 of this Part, with respect to property, the acquisition, construction, reconstruction or erection of which commenced on or after January 1, 1976 and prior to January 1, 1987, the taxpayer will be allowed a credit for each of the three years next succeeding the taxable year for which the credit pursuant to Subpart 5-2 of this Part is allowed with respect to such property, of 50 percent of the credit allowable pursuant to Subpart 5-2 of this Part. Provided, that the credit allowable under this section for any taxable year will only be allowed if a taxpayer has at least one employee during that year, and if:
Tax Law, § 210(12-A)