New York City’s union workers love Walmart.

Three-quarters of city residents who wear the union label favor having Walmart open its big-box stores in the Big Apple, according to a new poll prepared for the retail giant.

The poll showing overwhelming union-member support for Walmart is a pre-emptive strike against the labor-friendly City Council, which is holding what is expected to be a Walmart-bashing hearing today.

Meanwhile, Walmart returned some of the love yesterday. It announced that it had reached a five-year agreement with the Building and Construction Trades Council of Greater New York to perform all original construction and renovations at any stores it might open in the city.