He was the deputy CEO and deputy chairman of Saudi Oger, one of the largest construction companies in Saudi Arabia, which closed in 2017, allegedly due to mismanagement and corruption.
In late February 2018, Hariri's social media company, Vero, saw a marked increase in usership and scrutiny. This focused especially on Hariri's own association with Saudi Oger at the time of its failure to pay its migrant workers in November 2015. According to a statement to USA Today and Gizmodo from Vero, he ceased duties as deputy CEO and deputy chairman of his family's construction company in 2013. However, Gizmodo found references to his still being in those positions as late as February 2016, after the company's offense, including in one of Vero's press releases.