WASHINGTON – The number of Americans seeking unemployment benefits fell sharply for a fourth straight week, a sign that the job market may be improving.

The Labor Department said Thursday that weekly applications for unemployment benefits fell 29,000 last week to a seasonally adjusted 343,000, the lowest in two months. It is the second-lowest total this year.

Applications are a proxy for layoffs, so the drop indicates that companies are cutting fewer jobs. But employers also need to step up hiring to rapidly push down the unemployment rate.