批准时的解释性声明：
“1. 关于第2条第2款，比利时政府把国籍歧视解释为不一定意味着各国有义务自动保证外国人享有与其国民同样的权利。该术语应当被理解为，依据民主社会通行的原则消除任何任意行为，而不是基于客观合理的考虑消除差别待遇。”
2. 关于第2条第3款，比利时政府认为，这一规定不能侵犯征用或国有化情况下的公平补偿原则。”
鸣谢：译文由WIPO提供。© 2014 WIPO
Objection with regard to the reservation and statement made by Qatar upon accession: (May 21, 2019)
"The Kingdom of Belgium has carefully examined the reservation and statement made by the State of Qatar upon its accession, on 21 May 2018, to the International Covenant on Economic, Social and Cultural Rights.
The reservation to article 3 and the statement concerning article 8 make the provisions of the Covenant subject to their compatibility with the Sharia or national legislation. The Kingdom of Belgium considers that this reservation and this declaration tend to limit the responsibility of the State of Qatar under the Covenant by means of a general reference to the rules of national law and Sharia. This creates uncertainty as to the extent to which the State of Qatar intends to fulfil its obligations under the Covenant and raises doubts about the State of Qatar's compliance with the object and purpose of the Covenant.
The Kingdom of Belgium recalls that under article 19 of the Vienna Convention on the law of treaties, a State cannot make a reservation incompatible with the object and purpose of a treaty. Moreover, article 27 of the Vienna Convention on the law of treaties stipulates that a party may not invoke the provisions of its national law as justifying the non-fulfilment of a treaty.
Accordingly, the Kingdom of Belgium objects to the reservation made by the State of Qatar with respect to article 3 and to its statement in respect of article 8 of the International Covenant on Economic, Social and Cultural Rights.
The Kingdom of Belgium specifies that this objection does not preclude the entry into force of the International Covenant on Economic, Social and Cultural Rights between the Kingdom of Belgium and the State of Qatar."