Table 2.

Commercial tree care respondent characteristics (361 of 742 survey respondents).

VariablePercent of commercial tree care workers
Certified at time of survey74
Previously certified but dropped4
Not certified23
Based in the USA95
Services (at least 51% of time)
      Tree removal26
      All other services34
Size of firm
      Over 1036
Tenure in industry (years)
      15 or fewer years38
      25 or more39
Highest level of education
      High school degree or less18
      Associate’s, 2-year, or technical degree19
      4-year degree or more63