Police have appealed for public assistance to find a man missing from the Illawarra since last month.
Atikoon Saenmuang, 29, was last seen on February 9 after leaving work in the Wollongong area.
The Albion Park Rail man was reported missing after he could not be contacted by friends or family.
Police have been told there are serious concerns for his welfare.
It is thought Mr Saenmuang could have travelled to the western and south-western suburbs of Sydney, including Liverpool in particular.
Mr Saenmuang, who is originally from Thailand, has been described as being of Asian appearance with an olive complexion, about 170-175cm tall with a slim build.
Anyone who sees Mr Saenmuang or knows his whereabouts should contact Lake Illawarra Police via Crime Stoppers on 1800 333 000.