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O&M - operations and maintenance (programs)
OASDHI - Old Age, Survivors, Disability, and Health Insurance (Act) of 1935
OCA - outstanding claims account
OCIP - owner controlled insurance program
OCP - owners and contractors protective (insurance)
OCSLA - Outer Continental Shelf Lands Act of 1953
OD - occupational disease
OECD - Organization for Economic Cooperation and Development
OEE - operators extra expense (insurance)
OFA - Organized Flying Adjusters
OGP - original gross premium
OI - outage insurance
OIS - operating information system
OL&T - owners, landlords, and tenants (insurance)
OMCS - Office of Motor Carrier Standards
OOP - out-of-pocket limit
OPIC - Overseas Private Investment Corporation
OPPI - owners protective professional indemnity
ORFS - operational risk financing securities
ORM - operational risk management
OSHA - Occupational Safety and Health Act of 1970
OSHA - Occupational Safety and Health Administration
OSLR - outstanding loss reserves
OTC - other than collision