It may be a sign that the Fed rate hikes partly aimed at cooling wage inflation amid a red-hot job market are starting to work.

In the economics world, three in a row can make a trend. Active job listings in the US dropped 2.8% in June, according to LinkUp data. That's on top of 4.2% and 3.1% decreases in May and April, according to the firm. LinkUp is a global job-market data and analytics firm in the online jobs space.

Declines in job listings were seen nationwide, with 94% of states seeing a decline in help wanted ads. Deleted job listings rose 6.9%, according to LinkUp data released Tuesday. Companies typically decrease hiring to maintain revenues and profitability. After that, layoffs become a risk.