Purpose Umrah is a religious ritual that takes place inside the Holy Mosque in Makkah. Umrah can be performed any time during the year; however, performing Umrah in the month of Ramadan is much rewarded. Although the kingdom of Saudi Arabia is hosting this event each year, studies that focus on...

This paper extends the literature on monopsony and labor market concentration by taking a task-based approach and estimating the causal effect of concentration in the demand for skills on labor market outcomes. The prior literature has focused on industry and occupation concentration and likely...