Most policies contain a provision that requires you to apply for Canada Pension Plan Disability if requested by the insurer. It is usually to your advantage to apply, even though the insurance company will get the credit or offset. Most lawyers would agree the test of disability for CPP is more difficult than LTD, so if you qualify for CPP, it may be harder for the insurer to justify a stoppage. Moreover, CPP considers years in which you receive CPP Disability to be contribution years, thereby increasing your regular CPP entitlement upon retirement.