Addition of cooperative societies to tax deduction obligations; transitional provision covers payments credited or paid before the effective cut off. The amendment inserts any co-operative society into the enumerated payees subject to tax deduction on payments to contractors and subcontractors, altering punctuation to accommodate the insertion; it also adds a transitional sub clause treating sums credited or paid before the statutory cut off in pursuance of contracts between contractors and co operative societies, or between contractors and subcontractors for work (including supply of labour) undertaken for co operative societies, as covered by the provision.