Plow Builder + Beneficiary

[fiscused]

Should it work?

[alexwjb]

No, it doesn't work. Card text:

Beneficiary: If this is your 3rd occupation, you can immediately play another occupation for an occupation cost of 1 food and/or play 1 minor improvement by paying its cost.

Plow Builder: You can build the Joinery when taking a Minor Improvement action.

Beneficiary does not give you a Minor Improvement action, it lets you build a minor improvement (specifically). For example, if you had Packaging Artist/Field Merchant in play, you couldn't decline the Beneficiary minor improvement to bake/get 1 food.

It reminds me of Family Friendly Home which requires a Build Rooms action to proc, and thus does not combo with (for example) Cottager, which lets you (specifically) "build exactly 1 room".