An SME in Córdoba wanted to sanction an employee for arriving late three times in one week. The lawyer asked a simple question: "Where are the schedule, the tolerance, and the consequence written down?". It wasn't written anywhere. Result: the sanction had no basis. Without clear internal regulations, the employer has nothing to hold onto when a late arrival, an absence, or a breach occurs. Here I explain what internal regulations are, what the LCT says, and which schedule clauses cannot be missing.