(1) In Part VI of the Principal Act "worker" shall include any person who is -
(a) a servant of a local authority,
(b) an officer of a class specified in the schedule to the Industrial Relations Act, 1946 (Part VI, Extension) Order, 1956 (S.I. No. 92 of 1956),
(c) a servant of a vocational education committee,
(d) a servant of a committee of agriculture,
(e) a nurse employed by a mental hospital authority within the meaning of the Mental Treatment Acts, 1945 to 1966, or
(f) an officer of a public assistance authority whose duties relate mainly to home assistance within the meaning of the Public Assistance Act, 1939,
and such other persons as stand designated for the time being by the Minister for Finance.
(2) The Minister for Finance may from time to time -
(a) designate for the purposes of subsection (1) of this section any persons (other than established civil servants within the meaning of the Civil Service Regulation Act, 1956) employed by virtue of section 30(1)(g) of the Def