If a person works for 10 different employers per month, it doesn't make sense that all 10 must provide IMSS for this worker. How would the IMSS police (jaja) even know what employer isn't providing IMSS? I don't believe the workers actually record the employer's names when they file taxes, only income amount. What if the worker is included in a family IMSS plan, like a wife included on her husbands plan? As usual, more questions than answers regarding legislation.