The protection and restriction of the people*s right to legally acquired land ownership are provided for in Article 143, Paragraph 1, of the Constitution. Expropriations of land are compulsory acquisitions by the government, through lawful procedures, for public utility purposes. The criteria and procedures for expropriation must conform to the principle of necessity stipulated in Article 23 of the Constitution. Article 219, Paragraph 1, Subparagraph 1, of the Land Act provides that where private lands are expropriated but not yet utilized according to the plans, within one year after payment of expropriation compensation, the original land owners may redeem their lands at the expropriation price by applying to the relevant municipal or county land authorities (or the land authorities of municipalities governed by the central government and land authorities of other municipalities and counties, as amended on January 26, 2000) within the statutory period of five years commencing from the day following the said one-year period. The purpose for reserving the right to redeem expropriated lands to land owners is to prevent unnecessary expropriations or delays in constructing public utility. Therefore, where the organization intending to use the expropriated land (the "intended land user") fails to utilize the land within the one-year period according to the expropriation plan, and such failure can be attributed to the landowner or persons occupying the land on behalf of the owner, then the relevant authorities cannot be held responsible for the delay. On the other hand, if, due to no fault of the landowner, utilization of the land is prevented by other land users unrelated to the owner, then the landowner shall not be deprived of the right to redeem his/her land, provided, however, that the municipal, county and relevant land authorities fail to, within the said one-year period, remove land improvements on their own account and on the land owner*s account under Article 215, Paragraph 3, and Article 238 of the Land Act, and that the intended land users fail to commence an action for compensation within the one-year period. The application of Article 219, Paragraph 3, of the Land Act falls within the scope of the foregoing explanation and does not contravene the Constitution.