Nothing in this chapter or in an apprenticeship agreement may be construed to invalidate:
(1) the at-will nature of employment in Vermont;
(2) any apprenticeship provision in a collective bargaining agreement between employers and employees establishing more stringent apprenticeship standards; or
(3) any special provision for veterans, minorities, or women in the standards, apprentice qualifications, or operation of an apprenticeship program or in the apprenticeship agreement that is not otherwise prohibited by law, Executive Order, or authorized regulation or rule.