• To carry out an employment activity for at least one four-month period of the academic year to be started, accreditation of which will be provided by means of a Social Security registration document or equivalent.
• Be responsible for the care of a family member up to the second degree of kinship by blood or marriage (care of dependent dependents, care of sick people, care of dependent children under 12 years of age). This must be accredited with a certificate issued by a doctor or social agent or equivalent document.
• To be a high-level, high-performance or high-level university sportsperson.
• Be in other extraordinary situations that the academic committee responsible for the programme considers to be decisive for authorising part-time student status (signing of an employment contract, etc.).

1. The PhD student will submit the standard application form / authorisation for part-time/full-time PhD student status to the Academic Committee of the corresponding programme, accompanied by the supporting documentation.
2. The Academic Committee of the programme will request, if it considers it appropriate, a favourable report from the thesis supervisor and the tutor.
3. If the decision is favourable, the Academic Committee will send it, together with the supporting documentation provided with the application, to the Administrative Secretary's Office of the School for Doctoral Studies so that it can be registered in the PhD student's file.

For each doctoral student, only one change in the residence regime will be authorised per academic year and it will take effect from the date on which it is authorised by the Academic Committee.

When a PhD student is enrolled on the same doctoral programme on a full-time and part-time basis, the total duration of their doctoral studies will be calculated in terms of full-time, with each part-time day being counted as 0.6 full-time days.

Applications for a change of modality during the extension period do not produce any change in the deadline for the deposit of the thesis.

Sick leave due to illness, pregnancy, or any other cause provided for in the regulations in force (maternity or paternity leave) will not be taken into account for the purposes of calculating the deadline for remaining in the doctoral studies.

The authorisation of this type of leave does not exempt students from renewing their enrolment within the deadlines established for each academic year.

In the event of any of these circumstances, the following procedure must be followed:

1. The PhD student will submit to the Academic Committee of the doctoral programme the standard form for notification of sick leave/reinstatement due to illness/maternity or paternity leave, accompanied by the corresponding supporting documentation (medical report of sick leave, authorisation for maternity or paternity leave).
2. The Academic Committee will send the application and the accompanying justification to the Administrative Secretary's Office of the Doctoral School so that the dates of the period of maternity or paternity leave can be recorded in the PhD student's file.
3. At the end of the medical leave or maternity or paternity leave, the PhD student will submit the standard form for notification of sick leave/reinstatement due to illness/maternity or paternity leave to the Academic Committee of the programme, accompanied by the corresponding supporting documentation (medical discharge report) and the Academic Committee will send it to the Administrative Secretariat of the Doctoral School for it to be recorded in the PhD student's file.

DURATION. The maximum duration of the leave of absence will be that established in the applicable regulations. In any case, the initial leave of absence from the programme shall be a maximum of one year. However, leaves of absence due to illness that do not indicate the date of termination will be considered to be terminated on the last day of the academic year in which they were granted.

EVALUATION. During the period of sick leave, the PhD student may not include in the activities document any activity carried out during this period or update his/her research plan. Once they have returned to the programme, they may include in their dossier those merits recognised during the sick leave that are the result of work carried out prior to the sick leave (acceptance of a paper at a conference, acceptance of an article in a journal, etc.).

Doctoral students may request voluntary temporary withdrawal from the programme for a maximum period of one year, extendable for a further year, from the second enrolment on the programme. This request must be addressed and justified to the Academic Committee responsible for the programme, which will decide whether or not to grant the request.

Temporary voluntary withdrawals will not be taken into account for the purposes of calculating the deadline for remaining in doctoral studies.

These withdrawals may be requested:

• A) For a full academic year.
• B) For periods shorter than the academic year.

A) Temporary withdrawal for the next full academic year.

The doctoral student will submit the Application/Authorisation for temporary withdrawal from doctoral studies for a full academic year to the Academic Committee of the programme within the same period as that established for the renewal of enrolment for that academic year and up to one month after the end of that period. In this case, the PhD student does not have to register for that academic year.

In this case, the PhD student is not obliged to enrol in the academic year and, if the enrolment has already been formalised, it will be cancelled. If the student has already paid the registration fee, he/she will be entitled to a refund of the registration fee.

During this period, the PhD student's file will remain closed and the Academic Committee will not carry out any assessment.

B) Temporary withdrawal for periods shorter than the academic year.

If temporary withdrawals do not fit into a full academic year, withdrawals may be requested for periods of at least three months. Applications may be submitted at any time and will take effect from the moment they are granted by the Academic Committee and in no case with retroactive effect.

Application/Authorisation for temporary leave of absence.

This leave of absence does not exempt the student from the obligation to enrol each academic year. The student will be assessed by the Academic Committee of the programme within the established deadlines, except if the leave has lasted for more than nine months, in which case the Academic Committee may classify the student as ineligible for assessment.

Permanent withdrawal from a doctoral programme will mean that the student will not continue studies in the same doctoral programme in which he/she was enrolled, and his/her doctoral record will be closed. However, the student may apply for admission to a different doctoral programme, with the status of new doctoral student.

A doctoral student shall be permanently withdrawn from a doctoral programme in the following cases:

• a) When he/she has not passed the training complements within the established period.
• b) When he/she exceeds the maximum periods of stay, including authorised extensions, in accordance with the provisions of these regulations.
• c) For failure to request an extension or for refusal of the requested extension.
• d) When the Academic Committee of the programme issues a negative report due to significant shortcomings in the evaluation of the research plan and the activities document, as established in Royal Decree 99/2011, of 28 January.

Abandonment of a doctoral programme will entail the loss of the status of researcher in training at the University of Valladolid and will make it impossible to continue on the programme in which he/she was enrolled, closing his/her file.

A doctoral student is considered to have abandoned a doctoral programme in the following cases:

• When he/she does not complete the enrolment process or annual renewal of enrolment within the established deadlines without having a temporary withdrawal authorised, or does not pay the corresponding public fees.
• When you apply for withdrawal at your own request.

As withdrawal implies the cancellation of your enrolment, you can request it:

1)Through the procedure of Cancellation/Modification of enrolment in the E-Office.

2) By means of the Withdrawal Communication form to be submitted to the Academic Committee of the programme, who will inform the Administrative Secretary of the Doctoral School.

Exceptionally, in cases of withdrawal from the doctoral programme due to failure to renew the annual registration or due to a request to withdraw at the student's own request, the Standing Committee of the EsDUVa, having heard the programme's Academic Committee, may authorise the reinstatement of the doctoral student.

This re-entry may only be authorised once and will be carried out within the ordinary deadlines established in the academic calendar and in competitive competition with the other candidates.

Once the reinstatement has taken place, the previous period of stay in the programme will be taken into account for the purposes of calculating the length of stay in the PhD programme.

Application for authorisation for readmission.

The duration of the doctoral studies will be calculated from the date of the first enrolment in the programme until the date of submission of the application to deposit the doctoral thesis.

Full-time doctoral students: They will have three years.

Part-time doctoral students: five years.

If the application for submission of the thesis has not been submitted by the above-mentioned deadlines, the Academic Committee of the programme may authorise an extension of one more year, in the case of full-time students, or two more years, in the case of part-time students.

Procedure:

1. The doctoral student will submit their application to the Academic Committee of the doctoral programme before the deadline for the deposit of the thesis that appears in their file, by means of the electronic procedure established through the SIGMA application "Applications for extensions in doctoral studies".
2. The Academic Committee of the programme will resolve the application through the same electronic procedure. When the coordinator of the doctoral programme signs the corresponding resolution, the PhD student's file will be updated with the new deadline for submitting the application to deposit the doctoral thesis.

Guide to applying for an extension of time for doctoral studies

Exceptionally, the extension of studies may be extended, regardless of the type of dedication, for another additional year.

To do so:

1. The doctoral student will submit their application to the Academic Committee of the doctoral programme before the deadline for the deposit of the thesis that appears in their transcript, using the electronic procedure established through the SIGMA application "Applications for extensions in doctoral studies".
2. The Academic Committee of the programme will resolve the application through the same electronic procedure. When the coordinator of the doctoral programme signs the corresponding resolution, the student's file will be updated with the new deadline for submitting the application to deposit the doctoral thesis. A report from the tutor-director must accompany the application for the exceptional extension.