Oregon Revised Statutes Occupations and Professions § 671.562

(1) A landscape contracting business that qualifies under ORS 671.525 to be classified as a nonexempt independent contractor must maintain workers' compensation insurance coverage in effect for all employees of the landscape contracting business.

(2) A landscape contracting business licensee that qualifies under ORS 671.525 to be classified as an exempt independent contractor, and that has entered into a contract with a worker leasing company or temporary service provider for the supplying of workers to the landscaping business, must verify that workers' compensation insurance coverage is maintained in effect for all leasing company or service provider employees supplied for use by the business. As used in this subsection, “worker leasing company” and “temporary service provider” have the meanings given those terms under ORS 656.850.