The NSW Government has raised the possibility of job cuts as it begins a comprehensive review of RailCorp, the state’s chief rail body.

Transit officers have been in the cross-hairs in the past, and now fears have re-emerged their jobs may come under threat again as the Government seeks to cut costs across the rail network.

Rail, Train and Bus Union secretary Alex Claassens said crime had reduced on trains due to the presence of the grey-shirted security officers, and any attempt to reduce their numbers would only increase the likelihood of crime occurring.

‘‘Our concern is that if there was any move to remove the transit officers from the network that would result in the level of crime increasing,’’ he said.

‘‘It would be open slather for thugs.’’

Mr Claassens said the public already had a low opinion of public transport.

“Passengers and rail workers need to know that they can move freely on the rail network - all day, every day,’’ he said.

Between 2002 and 2007, offences against rail commuters fell by more than 32 per cent, according to NSW Bureau of Crime Statistics and Research figures.

NSW Transport Minister Gladys Berejiklian has not revealed what reforms will be made to help reform RailCorp which costs about $10million a day.

She has however said, in previous statements, that she would not rule in or out any reforms to RailCorp including job cuts.

‘‘We will have a more efficient, customer-focused organisation when this reform is implemented and that is good news for taxpayers and travellers,’’ she said.

Keira MP Ryan Park, who worked under former Labor transport minister David Campbell, said feeling safe on the rail network consistently ranked highly in passenger surveys.

‘‘Feeling safe on the rail network is one of the most important things commuters value and that is because of the transit officers and the NSW police working together,’’ he said.