Confirm correct workers'-compensation classification codes for tree work when preparing bids

Steps

1. Identify the correct NCCI class code for the work performed — code 0106 (Tree Pruning, Trimming, or Spraying — All Operations & Drivers) covers pruning/trimming/spraying done with hand tools, ladders, or aerial buckets without heavy machinery.
2. Recognize that tree removal, or work primarily involving clearing trees (e.g., for construction rights-of-way), is generally excluded from 0106 and falls under a different code — confirm the correct code with the carrier or the applicable rating bureau.
3. For California specifically, check WCIRB guidance on how classifications 0106 and 0042 are applied, since state rating bureaus can interpret codes differently than NCCI.
4. Confirm whether the state uses NCCI classification codes or an independent state rating bureau (e.g., California's WCIRB), since codes and rates are not uniform nationwide.
5. Get the classification confirmed in writing from the workers'-comp carrier before bidding a job that mixes pruning and removal work, since misclassified payroll can trigger premium audits and back-charges.