An Arkansas contractor taking work in Nevada deals with the same four questions everywhere: who licenses the trade, when a licence is actually required, when workers compensation kicks in, and where the business registers. Below is Nevada's answer to each, with the agency's own link.
Licensing
Nevada State Contractors Board
License required for construction work of virtually any size; NRS 624.031 exempts only repair or maintenance work valued under $1,000 including labor and materials, and the exemption fails if a building permit is required.
Workers compensation
Nevada Department of Business & Industry, Division of Industrial Relations, Workers' Compensation Section
Mandatory for employers with one or more employees; DIR states construction trades are required to have workers' compensation insurance.
Business registration
Nevada Secretary of State (SilverFlume portal)
New hire reporting
Most states require newly hired employees to be reported within a short window of their start date.
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Starting or running the business itself is covered in the contractor business guide. Arkansas licence records for Benton and Washington counties are in the contractor directory.