A Camborne PCSO has been honoured for her "tenacity and professionalism".
According to her bosses, PCSO Bev Faull has been "outstanding" since she started working with migrant workers in west Cornwall in January 2010.
Her citation, read out at the presentation at Bodmin police station, said: "Bev has become a source of great knowledge in eastern European culture as well as immigration, housing, employment and health and safety legislation, effectively planning and running multi-agency operations to tackle exploitation in west Cornwall.
"She has made a huge difference to the way migrant workers are treated in Cornwall and has received both national and international acclaim.
"She is now working with UKBA to prevent exploitation of individuals working in our takeaway restaurants and effectively using legislation to repatriate those not complying with European treaty rights."