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Two, the labor insurance fund is the main source of construction enterprises to pay social basic old-age insurance premiums, is the protection of the legitimate rights and interests of workers. Construction enterprises must store labor insurance funds in special accounts for special purposes.
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Four, construction general contracting or professional contracting enterprises (hereinafter referred to as the employer) will be contracted within the scope of labor subcontracting to construction labor subcontracting enterprises (hereinafter referred to as the contractor), in the construction labor service contract signed, it should be clear that the employer should pay labor insurance fund to the labor contractor, and the labor insurance fund paid shall not be lower than the minimum standard for labor workers to pay social basic old-age insurance premiums.
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VI ..... Within one month after receiving the labor insurance fund, the employer shall pay the labor insurance fund to the contractor according to the construction labor subcontract, and the unpaid labor insurance office shall order it to pay; Refuses to pay, the municipal labor insurance department may suspend its labor insurance fund allocation, and then allocate it after it is corrected.
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-Documents from the official website of Hunan Provincial Government
In other words, it should be paid by the construction unit.
It is unreasonable to ask the construction unit to return the goods.
If the return is required, it means that the construction enterprise (employer) has not paid any labor insurance fund. In violation of government regulations, "the labor insurance fund paid shall not be lower than the minimum standard for laborers to pay social basic old-age insurance premiums." -It's illegal.
"The construction units (owners) and responsible persons who are in arrears or fail to pay the labor insurance fund in full will be punished according to the relevant national and provincial laws, regulations and policies." -"Provisions on Further Strengthening the Overall Management of Labor Insurance Funds in Construction Industry" Document of official website, Hunan Provincial Government.
National regulations should be similar.
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.