This was also one of several instances where the Morales government claimed security forces didn't have firearms and therefore civilian casualties were some kind of mystery.
As is often the case, the killings were followed by a partial agreement between the government and the workers it repressed. In this instance, the government promised a new pension law and the workers offered a 45-day truce in mobilizations. https://thecommune.wordpress.com/2008/08/29/cob-announces-45-day-truce-with-bolivian-government/
Seven days later, Morales signed Supreme Decree 29668 compensating the families of those killed with Bs/50,000 (~$7,300) each. https://www.lexivox.org/norms/BO-DS-29668.html