Construction employment declined in 31 states between August and September with fewer people working in that field compared to last year in 40 states, the Associated General Contractors of America reported in an analysis of state employment data released today by the Labor Department.

Construction employment is likely to continue to worsen amid uncertainty about federal spending and tax rates for next year, association officials noted.

Arizona lost 700 construction jobs during that period. Compared to the same period last year, Arizona has lost 4,400 construction jobs.

“Construction firms are caught between a difficult present and an uncertain future,” said Ken Simonson, the association’s chief economist. “Looking ahead, nobody knows what will happen to the only thing keeping the current market from getting worse, federal spending, as long-term water, energy and transportation spending programs remain in limbo.”

Simonson noted that Rhode Island (-2.9 percent, -500 jobs) lost the highest percent of construction jobs for the month while California lost the most jobs (-2.5 percent, -13,300 jobs). Among other states losing construction jobs between August and September were Texas (-1.2 percent, -7,000 jobs), New York (-1.8 percent, 5,800 jobs), Ohio (-2.5 percent, -4,400 jobs), and Pennsylvania (-1.1 percent, -2,500 jobs).

Hawaii (4.9 percent, 1,400 jobs) and Minnesota (3.8 percent, 3,100 jobs) experienced the largest one-month percentage increase in construction employment between August and September. Besides those two states, another 13 and the District of Columbia added jobs, while construction employment was unchanged in four states. Other states with increases in construction employment included Florida (0.5 percent, 1,700 jobs), Georgia (1.0 percent, 1,500 jobs), Washington (0.8 percent, 1,100 jobs) and Illinois (0.4 percent, 700 jobs).

Simonson noted that nine states and D.C. added construction jobs for the year while employment in Alaska was unchanged. The largest year-over-year increase was in Oklahoma, where construction employment rose 9.8 percent (6,500 jobs), followed by Kansas (8.9 percent, 5,000 jobs), New Hampshire (8.0 percent, 1,800 jobs), the District of Columbia (4.5 percent, 500 jobs), and Arkansas (3.5 percent, 1,800 jobs).

Among the 40 states that lost construction jobs over the past twelve months, Nevada experienced the largest percentage decline (-19.3 percent, -14,200) in jobs while California lost the most jobs (-50,700, -8.8 percent). Other states experiencing large declines for the year include Vermont (-14.1 percent, -1,900 jobs), Idaho (-12.3 percent, -4,000), Colorado (-11.5 percent, -14,200 jobs), and Kentucky (-9.8 percent, -7,000 jobs).

Association officials cautioned that construction employment will continue to stagnate as firms, already coping with depressed private, state and local demand, contend with an uncertain federal marketplace. Adding to the confusion, officials said, was that tax rates for most small construction firms have also not been set for next year. “Adding uncertainty and confusion into an already bleak market is a good way to keep construction workers out of a job,” said Stephen E. Sandherr, the association’s chief executive officer.