The US economy will continue to grow but "barely half" of the business economists surveyed now forecast GDP to expand by more than two percent this year. (Photo: AFP)

Most of the rest expect the economy to grow by 2 percent or less, the survey showed. The government on Friday reported that the US economy expanded 3.2 percent in the first three months of the year but many economists say that pace cannot be sustained.

At the same time companies in the NABE survey continue to try to adjust to the impact of retaliatory tariffs on American goods and to US tariffs on imports that have raised costs.

"A year after the US first imposed new tariffs on its trading partners in 2018, the recent tariffs have negatively affected more than one-fourth of respondents' firms," NABE President Kevin Swift said in a statement.

But three-quarters of goods-producing firms reported a negative impact, with 67 percent of manufacturers indicating they had faced higher materials costs and half have raised prices of their products, the survey showed.

In addition, 42 percent reported negative sales and a third said they had delayed planned investments.

With the US unemployment rate at historic lows, labor shortages continue to dog the companies surveyed, prompting nearly half to raise wages or take other steps to adjust.

Nearly 80 percent of firms said they were having difficulty finding high-skilled workers, while half face shortages of mid-skill workers.

In the manufacturing sector, 60 percent of firms have raised wages while half have lowered requirements for new hires.