The consequences of introducing or tightening time limits on receiving high unemploymentbenefits are studied in a shirking model. Stricter time limits have an ambiguousimpact on the net wage, and changes of utility levels of employed workers and recipientsof high unemployment benefits have the same sign as the variation in the netwage. The utility differential between the two groups of unemployed shrinks. The relativeincome position of skilled workers moves in the same direction as the net wage ofunskilled workers. When access to high benefits is denied for caught shirkers, strictertime limits may decrease employment.