# Labor disputes at University of Sonora

> Live situation record from CLSTR: https://clstr.news/situations/labor-disputes-at-university-of-sonora
> Updated: 2026-08-21T20:47:00.000Z. Sources: 4. Developments: 2.

Labor disputes have emerged at the University of Sonora involving different unions. The Sindicato Independiente de la Universidad de Sonora (SIUS) staged protests and blockades to demand compliance with a 2023 labor court ruling regarding the distribution of benefits and job allocations. Following mediation with state and university officials, the rectorate was given a one-week deadline to resolve these judicial issues.

Concurrently, the Academic Workers Union of the University of Sonora (STAUS) has filed complaints regarding irregularities in academic workload assignments. The union has specifically highlighted cases where qualified professors were allegedly excluded from teaching assignments, arguing such actions violate collective bargaining agreements and impact both faculty income and student instruction.

## Timeline

### 2026-08-21: University of Sonora union denounces academic workload irregularities

The STAUS union has denounced irregularities at the University of Sonora's Caborca campus, alleging that professor Esmeralda Velarde Quijas was unfairly denied her academic workload for the current semester.

2 sources. https://clstr.news/cluster/university-of-sonora-union-denounces-academic-workload-irregularities

### 2026-08-17: Universidad de Sonora union demands compliance with labor ruling

The Sindicato Independiente de la Universidad de Sonora (SIUS) has blocked university rectorate access to demand compliance with a 2023 labor ruling regarding job positions and benefit distributions.

3 sources. https://clstr.news/cluster/universidad-de-sonora-union-demands-compliance-with-labor-ruling

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Cite as: Labor disputes at University of Sonora. CLSTR, https://clstr.news/situations/labor-disputes-at-university-of-sonora