free labour

British  

noun

1. the labour of workers who are not members of trade unions

2. such workers collectively

---

Example Sentences

"A good indication of whether prisoners freely consent to work is whether the conditions of employment approximate those of a free labour relationship," the spokesperson said.

From Reuters

Capitalising upon the free labour of K-influencers, the government reposts and shares their content on official YouTube channels.

From Salon

JMW: We’re not doing free labour any more, period.

From Nature

Much more than just a way to bag some free labour, projects such as Zooniverse often exploit the human brain’s ability to recognize patterns, or to spot unusual features in data that even the most sophisticated computer algorithms can miss.

From Nature

One of Lintott’s key messages is that citizen science is much more than free labour.

From Nature