National insurance. A bill [as amended by Standing Committee G] to amend the provisions of the National Insurance Acts 1965 to 1970, the National Insurance (Industrial Injuries) Acts 1965 to 1969 and the Industrial Injuries and Diseases (Old Cases) Acts 1967 and 1969 as to contributions and benefits; to make provision for invalidity benefit for the chronic sick and for a retirement pension and age addition for certain persons over the age of eighty; to make new provision in relation to polygamous marriages for the purposes of any of the said acts or of the Family Allowances Act 1965; and for purposes connected with those matters [electronic resource].