The purpose was to determine whether an alert to get up and move once per hour, while at work would reduce sedentary time, change the number of sit-to-stand transitions and change perceived wellness. A secondary purpose was to determine whether subjective recall of physical activity (PA) and sedentary time were related to objective measures. Participants were office staff and admininstrators working in occupations primarily consisting of sitting at a desk. Participants were randomly assigned to one of two groups: the control – control group (CC), or the control – intervention group (CI).Both groups wore a triaxial accelerometer for two weeks. The CC group was instructed to maintain normal behaviors, whereas the CI group was instructed to maintain behaviors during week 1, but responded to the alerts during week two, The alert was an hourly reminder on their phone or computer to get up and move for a short duration in the workday. Both groups provided subjective recall and objective measures of sedentary and PA behaviors at the end of week one and week two. Both groups completed a perceived wellness survey at the beginning of the study, and again after weeks one and two. A factorial/mixed design repeated measures Analysis of Variance (ANOVA) revealed no differences in any of the variables over time. There was a between groups difference, and a post hoc independent t-test revealed that sedentary time at work was different between groups in week 2. Perceived wellness was not different between groups at day 0, day 8, or day 16, nor was it different between groups between day 0 and day 8. However, there was a significant increase in perceived wellness from day 0 to day 16 ion both groups. A positive, weak correlation was found between subjective and objective sedentary time at work. There was also a positive, weak correlation between subjective and objective sedentary time over a 24 hour period. It was concluded that the intervention had no effect on sitting time or sit-to-stand transitions during working hours or sedentarytime outside of work. Perceived wellness scores over the two week protocol improved for both groups. Subjective recall was only weakly related to objective measures of sedentary time.