Workers at the Lufthansa Technik Automotive plant in Co Dublin are due to vote today on changes to work practices being sought by the company's management. The aircraft engine maintenace firm has warned that rejection of the proposals would threaten a planned €17230m investment in the Rathcoole plant and put jobs at risk. LTA says it is not seeking any lay-offs or pay cuts and the planned investment would guarantee the future of the plant for the next 15 years. The work-practice changes are being sought following the collapse of Labour Relations Commission talks on the matter.