It happened Monday around 12:30 p.m.at a construction site on Palermo Street in Hollis.
Police said the attacker punched the worker in the face -- then stole his phone and ran away.
Police said the 48-year-old victim wasn't seriously injured and refused medical attention.
Anyone with information in regards to the above incident is asked to call Crime Stoppers at 1-800-577-TIPS (8477). The public can also submit tips by logging onto the Crime Stoppers website at WWW.NYPDCRIMESTOPPERS.COM or by texting their tips to 274637 (CRIMES) then enter TIP577.
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