I believe that Malta lacks certain skilled workers because traditionally once the Maltese qualify in a subject they choose to work in the same job for most of their working life.
It is also true that nowadays the younger generation have no problem about moving from job to job. However, most youngters do not want to work as auto mechanics, plumbers, electricians, blacksmiths, upholsterers, or in the manufacturing or construction industries, hence the shortage on the market of such personnel.