The existing literature has pointed out the frequency of work-related smartphone use and its relationship with work recovery. Almost all research on this topic showed that frequent workrelated smartphone use inhibits work recovery. The aim of the present study was to investigate the relationship between work-related smartphone use and work recovery, to see whether there is a difference in work recovery depending on number of minutes the employees used their smartphone for work purposes. Additionally, we wanted to get an insight in work tasks and reasons why they used smartphones and their relationship with work recovery. Using the snowball sampling method, we collected 336 participants, but only 82 of them (M=16, F=56) between the ages of 23 and 61 took part in the diary study. The participants were involved in a five-day diary study that consisted out of The Recovery Experience Questionnaire and Smartphone Use Questionnaire that was designed specifically for this study. Results have shown the existing relationship between work-related smartphone use and work recovery, in a way that those who use them more days or minutes in a week experience lower work recovery. The previously mentioned relationship changer during the week depending on the number of minutes they used their smartphone. Smartphones are mostly used for checking e-mails, while the reason for its usage is the wish to be in touch with the job. Work recovery is significantly lower when the smartphone is used for planning with colleagues, preparing in advance or checking the e-mail due to lack of time during work or superior’s expectations.