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It proposes a multi\u2010stage method to obtain estimates of (1) the parameters of a flexible input requirement function and (2) technical inefficiency decomposed into time\u2010invariant (firm\u2010specific), time\u2010varying, and the residual components. The proposed method is used to analyse labour\u2010use efficiency of Swedish local social insurance offices on the basis of a large panel of observations during the time period 1974\u201384. Empirical results show: (1) substantial variations in labour\u2010use efficiency among these offices, with the mean efficiencies declining over time; (2) presence of economies of scale, thereby meaning that most of the offices were of suboptimal size.<\/jats:p>","DOI":"10.1002\/jae.3950100104","type":"journal-article","created":{"date-parts":[[2007,7,12]],"date-time":"2007-07-12T17:46:35Z","timestamp":1184262395000},"page":"33-47","source":"Crossref","is-referenced-by-count":94,"title":["Labour\u2010use efficiency in Swedish social insurance offices"],"prefix":"10.1002","volume":"10","author":[{"given":"Subal C.","family":"Kumbhakar","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lennart","family":"Hjalmarsson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2006,11,7]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4076(77)90052-5"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4076(88)90053-X"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF00158774"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4076(90)90046-V"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4076(90)90056-Y"},{"key":"e_1_2_1_7_1","volume-title":"Industrial Economics\u2014celebrating 50 years of research","author":"Bjurek H.","year":"1992"},{"key":"e_1_2_1_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/0304-4076(90)90054-W"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.2307\/2526093"},{"key":"e_1_2_1_10_1","doi-asserted-by":"crossref","first-page":"529","DOI":"10.1080\/01621459.1982.10477842","article-title":"Using time\u2010series and cross\u2010section data to estimate a production function with positive and negative marginal risks","volume":"77","author":"Griffiths W. 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