Union may save job for few who have job but people who don't (and they are lot more and increasing) are not gonna get helped by any union.
Note that in some countries, unions extend to cover workers who are not even part of the union. Heard about this from some french friends:
> Collective bargaining agreements (conventions collectives) may be negotiated between employers and labour unions covering a company or group of companies (accords d’entreprise), or between employers’ associations and labour unions covering an industry as a whole; in the latter case, the government may decide that the collective agreement covers even those employers who are not members of the employers’ association and is therefore mandatory throughout the industry.
https://www.nortonrosefulbright.com/en/knowledge/publication...
Not saying it's the right solution for $COUNTRY, but I was certainly surprised when I heard of this