This guide sets out the obligations that attach when an employee works somewhere other than the employer's premises. It begins with the governing principle — that employment law follows the physical location where work is performed — and then works through wage and hour rules, the state overlay that supplies most of the exposure, tax and registration consequences, insurance and safety, leave entitlements, classification, monitoring and privacy, hiring across jurisdictions, and separation. Separate parts address hybrid arrangements, occasional out-of-state work, and the categorically different problem of international remote work. The final parts provide a policy standard, a per-state onboarding sequence, an audit framework, and a reference table of the federal provisions that recur throughout, together with the practical systems that prevent the recurring wage claim.