Can Delay Alone Be a Substantial Breach Under Article 1191?
Quick answer: Delay can become a substantial breach under Article 1191, but lateness alone does not automatically justify resolution. The key question is whether the delay is serious enough to defeat the purpose of the contract, especially where timing was essential or the delay made performance commercially or practically useless.
This page focuses on the crossover between delay or default under Article 1169 and substantial breach under Article 1191.
Delay and substantial breach are different questions
Article 1169 addresses when an obligor is in legal delay, often after judicial or extrajudicial demand unless an exception applies. Article 1191 asks whether non-performance of a reciprocal obligation is serious enough to justify fulfillment or resolution with damages.
When delay is more likely to be substantial
- The contract expressly makes time essential.
- The timing was a controlling reason for entering the agreement.
- The delay defeats the transaction’s practical purpose.
- The obligor repeatedly misses deadlines despite notice.
- Late performance would no longer provide the expected benefit.
When delay may be insufficient for resolution
- The delay is short and readily curable.
- Most of the contract has already been substantially performed.
- The delayed item is incidental rather than central.
- The injured party continues accepting performance without reserving rights.
Decision table
| Fact | Likely significance |
|---|---|
| Time expressly made essential | Delay may more readily support substantial breach |
| Short, harmless delay | Resolution may be disproportionate |
| Repeated missed cure deadlines | Supports seriousness of breach |
| Performance became useless | May support Article 1191 resolution |
Evidence to preserve
- Contract deadlines
- Time-is-of-the-essence language
- Demand and cure notices
- Delivery records
- Proof of losses caused by lateness
- Messages showing why timing mattered
Related guides
See Can I Cancel a Contract if the Other Party Does Not Perform?, when a demand letter is required, and when cancellation may occur without going to court.