[4] SOC was a relatively important force in the labour movement on Gran Canaria, but less so on Tenerife.

[5] SOC came in fourth place (ahead of other nationalist forces in the fray) in the trade union elections in the Canary Islands in 1978.

[1] In the trade union elections of 1980 SOC emerged as the fourth force on Gran Canaria, with 69 delegates.

[12] SOC participated in the second anniversary celebrations of the Sahrawi Arab Democratic Republic in 1978.

[13] In 1979 SOC co-signed an appeal sent to a conference of the Organization for African Unity in Monrovia, claiming that the Canary Islands were under 'colonial' rule.