Some MNCs do check. when i joined a bank, they found out that i have a 15-year-old unsettled case of traffic accident lodged with the magistrates' court.

my relative's company also found out that a person they previously employed had forged his payslips using the company's letterhead. they got to know because he's interviewing at a company that did a reference check. and this is for a junior exec position (<$5k).