Evaluation of a modified contingency management intervention for consistent attendance in therapeutic workplace participants

Conrad J. Wong, Erin M. Dillon, Christine Sylvest, Kenneth Silverman

Research output: Contribution to journalArticle


In a therapeutic workplace business, drug abuse patients are hired as data entry operators and paid to perform data entry work contingent upon documented drug abstinence. Reliable attendance has been difficult to maintain despite the opportunity for operators to earn a living wage, 6 h per day, 5 days per week. A within-subject reversal design experiment evaluated a contingency management intervention that allowed for flexibility regarding when operators could arrive to work, yet maintained a contingency for reliable workplace attendance. Results from a within-subject reversal design experiment demonstrated the contingency management intervention to be effective in increasing the frequency of completed work shifts in four of five operators. Repeated measures ANOVA and Tukey's post-hoc tests of grouped data showed that the contingency management intervention significantly (P<0.05) increased the mean percent of days that operators completed work shifts (5% baseline; 63% contingency management; 7% baseline). This study demonstrates an effective procedure for maintaining attendance in therapeutic workplace participants.

Original languageEnglish (US)
Pages (from-to)319-323
Number of pages5
JournalDrug and alcohol dependence
Issue number3
StatePublished - Jun 11 2004



  • Contingency management
  • Employment
  • Treatment

ASJC Scopus subject areas

  • Toxicology
  • Pharmacology
  • Psychiatry and Mental health
  • Pharmacology (medical)

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