Unreported labour by one worker in a firm increases the probability of detection for his fellow workers, not only for himself. The firm takes this external effect into account. As a consequence, unreported work becomes rationed by the firms demand, rather than determined by demand equal supply....

This paper presents an economic model of prostitution, which differs from the existing literature in that it makes no restrictive assumptions regarding the gender, pay, and nature of forgone earning opportunities of prostitutes and clients, and applies the same behavioural hypotheses to both....

This paper assesses the causal effect of sick-leaves on subsequent earnings using an administrative dataset for Norway linking individual earnings, sick-leave records and primary care physicians. The leniency of a worker's physician - certifying sickness absence - is used as instrument for...

Increased tax progressivity raises the elasticity of labour demand with respect to consumer wages which implies that labour unions subtitute wages with employment. This paper investigates the effects to tax prograssivity on wages using Nerwegian establishment level panel data.