A Morrisons worker was assaulted by a woman in York on Monday, February 25.
It happened at about 7pm at the Morrisons store on Foss Island.
Police described the offender as a woman in her late 30s/early 40s, slim, with a pale complexion and mousey-coloured hair.
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At the time of the assault, she was wearing a light coloured waist length hooded jacket and carrying a handbag and rucksack.
North Yorkshire Police are asking anyone with information to contact them on 101 and ask for PC Shanley or email firstname.lastname@example.org.