This paper studies the optimal non linear income tax of couples. We build a general unitary model of labor supply and allow multidimensional heterogeneity in a discrete type framework. We concentrate our analysis on the resulting intra-family labor allocation of labor supplies and show that this analysis is strongly related to the choice of the tax unit (individual versus joint taxation). We gi...

nurses have long been relied as the major labor force in hospitals. featured with complicated and highly labor-intensive job requirement, multiple pressures from different sources was inevitable. success in identifying stresses and accordingly coping with such stresses is important for job performance of nurses, and service quality of a hospital. purpose of this research is to identify the dete...

Human trafficking has been described as modern-day slavery. Its victims are exploited for labor, including commercial sex. To control their victims, traffickers use force, fraud, or coercion, including techniques such as confinement, beatings, rape, confiscation of documents, debt bondage, false offers of employment, and threats of harm to the victim or the victim's family. Positions in which v...