EUOSHA/2021/OP/F/SE/0142  • ensuring ease of use for all participants;  • ensuring all content (video/audio/chat) complies with the GDPR. The tenderer is invited to detail any other relevant additional services or product features over and  above those listed.  2.3.14 Travel, accommodation and allowances  Transport  Based on the request and the information provided by EU-OSHA, the contractor must perform the  following tasks:  • survey the transport market, obtain the most economical rates (including by chartering group  transport or other special types of transport) and negotiate the most favourable cancellation  clauses;  • buy and provide participants identified by EU-OSHA with transport tickets and all relevant  information (itinerary, timetable, formalities) as rapidly as possible, using email, express  courier or prepaid pick-up where possible.  The contractor must justify the difference in price where cheaper tickets are found. If the explanation  provided does not justify the price differences, compensation for the amount of the difference may be  required by EU-OSHA.  If the travel price is higher than EUR 800 per participant, the contractor must first consult EU-OSHA  and obtain its agreement.  The contractor must supply the participants with all the necessary assistance where changes have been  made to the itineraries or transport tickets. It must inform EU-OSHA as quickly as possible of any  change requested by the participants (e.g. change in the flight time).  All additional costs generated by these changes must be reported in advance to EU-OSHA. If these  costs are justified and accepted by EU-OSHA, they may be invoiced for. No change may be made in  the absence of an agreement from EU-OSHA.  Accommodation  The contractor must research and reserve hotel rooms for the participants in the town or close to the  venue(s), and negotiate preferential conditions and advantageous cancellation clauses. The category  of hotel will be defined by EU-OSHA’s request for services. Unless otherwise indicated in the request,  breakfast will not be included in the room price.  The contractor will provide to EU-OSHA three different hotel offers for the price per night of  accommodation and per participant, from which EU-OSHA will indicate its preference.  36 