When it comes to agriculture the cry of labour shortage is almost ubiquitous. Just do google search for "australia farm labor shortage."
This was the article I read about a skilled tradie occupation shortage:
https://www.sbs.com.au/yourlanguage/punjabi/en/article/2018/11/09/no-takers-thousands-australian-permanent-residency-visas
But something doesn't quite jive with reality in that article, and I can't figure out what. Is it that there aren't many applicants, or they're just not inviting many? Or, as the article suggests, are tradies just not using SkillSelect because they don't have enough points?
Obviously illegal, but it was an online ad so virtually impossible to enforce. I suspect it was an off shore agent which is how most Asians arrange their WHV.