Employees admitted to using technology such as email to perform office work even when sick or on vacation.
The study found that so-called teleworking blurs the boundary between work and home.
Rising petrol prices and increasing demand for a more equal work-life balance had prompted many white-collar staff to work from home.
The study, published in Monthly Labour Review, concluded that teleworking is not helpful in reducing work-family conflicts.
The researchers also found that parents with dependent children are no more likely to work from home than the population as a whole.