The institute of representation by a proxy is regulated by the Administrative Procedure Code (in Czech only). A foreign national can be represented for the actions in accordance with the Alien Act by a third person, on the basis of a power of attorney, unless the Alien Act requires the presence of a foreign national in person.

Verification of the power of attorney is not required, with the exception of cases expressly stipulated by the Administrative Procedure Code (see § 33 par. 2 letter c) of the Administrative Procedure Code).

Pursuant to the Alien Act a foreign national is explicitly obliged to come in person to the authority in question in the case of the following situations:

a) to file an application for a visa, with the exception of a diplomatic visa or a special visa, for the extension of stay in the Czech Republic on the basis of a short-stay visa or for extension of the validity period of a visa for stay over 90 days for the purpose of exceptional leave to remain in the Czech Republic. In justified cases, a diplomatic mission/consular post of the Czech Republic or the Alien Police Inspectorate may waive the above obligation (§ 170 par. 1 of the Alien Act),

b) to provide explanation prior to the issuance of a visa, upon request of the Alien Police Inspectorate or diplomatic mission/consular post of the Czech Republic (§ 63 of the Alien Act),

c) upon request of the Alien Police Inspectorate, if it is needed for verification of a real state of play (§ 169 par. 3 and 11 of the Alien Act) during procedure on issuing of

• long-term residence permit for the purpose of family reunification on the territory of the Czech Republic (§ 42a of the Alien Act),
• long-term residence permit for the purpose of studies on the territory of the Czech Republic (§ 42d of the Alien Act),
• long-term residence permit for the purpose of protection on the territory of the Czech Republic (§ 42e of the Alien Act),
• long-term residence permit for the purpose of research on the territory of the Czech Republic (§ 42f of the Alien Act),
• long-term residence permit for the purpose of studies on the territory of the Czech Republic (§ 42d of the Alien Act),
• long-term residence permit for the purpose of exceptional leave on the territory of the Czech Republic (§ 43 of the Alien Act),
• long-term residence permit of a resident of another EU Member State on the territory of the Czech Republic (§ 42c of the Alien Act),
• confirmation about a temporary stay on the territory of the Czech Republic (§ 87a of the Alien Act),
• confirmation about a temporary stay on the territory of the Czech Republic for a family member of a national of the EU, Norway, Iceland, Liechtenstein or Switzerland, provided that he/she is not a national of states stated (§ 87b of the Alien Act),
• permanent residence permit on the territory of the Czech Republic (§ 66-68,  § 87g and § 87h of the Alien Act).

d) handing over of a residence permit confirmation (§ 44 par. 2 and § 74 par. 1 of the Alien Act), provided it concerns issuance of a long-term residence permit for the purpose of family reunification (§ 42a of the Alien Act), studies (§ 42d of the Alien Act), research (§ 42f of the Alien Act) or issuance of a permanent residence permit (§ 74 par. 1 of the Alien Act) in cases that an application has been lodged at a diplomatic mission/consular post; a foreign national is obliged to come in person to take over the card within 3 working days upon his/her entry into the Czech Republic, 

e)fill in and sign the registration form (§ 97 of the Alien Act); the obligation to come in person, fill in and sign the form does not apply to a foreign national under 15 years  (§ 103b of the Alien Act).