Legal persons governed by public law may call upon the employees of these companies for non-permanent tasks, known as missions, in the following cases only:
1° Temporary replacement of a member of staff due to sick leave, maternity leave, parental leave or parental presence leave, temporary part-time work, participation in activities as part of an operational, health, civil or other reserve, or performance of civil or national service, recall or retention in the armed forces;
2° Temporary vacancy of a post that cannot be immediately filled under the conditions provided for by Law no. 84-16 of 11 January 1984 on statutory provisions relating to the State civil service, Law no. 84-53 of 26 January 1984 on statutory provisions relating to the local civil service and Law no. 86-33 of 9 January 1986 on statutory provisions relating to the hospital civil service and by Chapter II of Title V of Book I of Part Six of the Public Health Code;
3° Temporary increase in activity;
4° Occasional or seasonal requirements as defined in 3° of article L. 1242-2.
When the contract is concluded under 1°, 3° and 4°, the total duration of the assignment contract may not exceed eighteen months. It is reduced to nine months when the purpose of the contract is to carry out urgent work required for safety reasons. It is extended to twenty-four months when the assignment is carried out abroad.
When the contract is concluded under 2°, the total duration of the assignment contract may not exceed twelve months. It is reduced to nine months if the contract is concluded pending the assumption of duties by a member of staff.
The assignment contract may be renewed once for a fixed term which, when added to the term of the initial contract, may not exceed the terms set out in the previous paragraph.