The Social Security Act does not treat a Disability and an Invalidity in the same manner, in that a disability allowance is a non-contributory allowance. Three rates apply with the second and third rate being paid by the Department even if disabled person is in employment.
An invalidity pension is a contributory benefit which prohibits beneficiary from carrying out any full-time or part-time employment hence the term invalid, whilst in receipt of the invalidity pension, as decided upon by the Medical Panel.