I do believe 16 but you may be able to get a worker's permit to work at 15 there
Most of these people are under qualified when it comes to Braum's questions unlike me; whose worked there for nearly a year now. We will sometimes hire at 14 and 15 but because of the tight regulations regarding younger teen working we don't hire them frequently.
I think 16
Working age in most states is 16
Im pretty sure 16
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