A SME owner brought it up in a talk last week: "I have an employee who starts at another company in the afternoon. Can I forbid it? And if they claim something from me later, am I on the hook?". Short answer: you cannot forbid it, except in specific cases. But there are things you do need to look at. Multiple employment—a worker with more than one job under an employment contract—is perfectly valid in Argentina, and yet it carries implications regarding working hours, contributions, and health insurance that many employers discover too late. Here is the complete map for 2026.