Share 'Where do I search for records of someone who arrived in Aust. in 1947.'

Michael McLaren was on the assisted passage scheme for ex-servicemen. His service number was RA 1509253.I can find no record of him other than on the passenger list for the Orion and classified as  'Labourer 111). Do records exist  which shows where passengers went after they disembarked? I've checked Electoral rolls, Marriage records but have not found any answers.