Figures from the Association of Convenience Stores and USDAW show that around 90% of retail workers are abused by customers simply as a result of doing their job.
Yn ôl ffigurau Cymdeithas y Siopau Cyfleustra ac USDAW mae tua 90% o weithwyr manwerthu yn cael eu cam-drin gan gwsmeriaid dim ond o ganlyniad i wneud eu gwaith.