Roughly half of Manhattan’s workers were in the office during the average workday as of late January, according to a Partnership for New York City survey.

The pandemic emptied out Manhattan’s office buildings and shifted scores of employees to remote work. But as coronavirus restrictions were lifted, only a relative handful of workers returned to offices.

The survey found only 9 percent of workers are back at the office five days a week, a number that’s unchanged from September. However, the number of fully remote workers did tick down ...