employees always concern about losing their job , or in other word , losing their income resources. for this purpose, every government requires strong system for covering these concerns. the unemployment insurance (ui) program’s can be used for achieving this goal. in this thesis, we price ui based on the insurance history of employee and the duration of being unemployed. we use the weibull distribution for finding duration of unemployment, and finally equivalence principle applied for finding the fair ui premium rate. our findings imply that the ui rate is less than 4% which is current ui rate in iran and has been set by law. it is worth to mention that 1 out of 4% must be paid by the government. the results of this study can reduce concerns about providing required budget by the government.