Twenty-two states and Washington, D.C., added construction jobs in May, according to the Associated General Contractors of America.

However, the AGC said that construction jobs remained sluggish and uneven.

“It’s not surprising to see close to an even split between states adding and losing jobs given that year over year construction employment for May was unchanged,” said Ken Simonson, the association’s chief economist. “There just isn’t enough demand for new construction to drive nationwide boosts in construction employment.”

Of the 23 locations with year-over-year increases, the largest percentage gains occurred in Michigan with a 5.2 percent gain. Hawaii, Texas, Tennessee and Washington, D.C., rounded out the states with the highest percentage gains.

Of the 27 states with decreases over the year, the largest percentage drop in construction employment took place in Nevada, which lost over 10 percent. Other states with the largest percentage of construction job losses were Rhode Island, Georgia, Vermont and Colorado.

Association officials cautioned that construction employment was likely to remain spotty as long as broader economic growth remains relatively modest. Officials believe that increased regulatory burdens, stalled infrastructure investment programs and entitlement spending were hampering economic growth.

“Increasing red tape, cutting infrastructure investments and avoiding the causes of our federal deficit aren’t helping the economy or boosting construction employment,” said Stephen Sandherr, the association’s chief executive officer.