If work activities from home correspond to 40% of the total, it is considered home office. This modality must be defined by contract without omitting mandatory contributions from the employer such as social security, equipment, tools, and payment services. Employers must provide, install and maintain the equipment and tools provided. They must pay for the telecommunications and a proportional part of the home office's electricity. It is the worker's right to receive training for technologies. Workers must take care of the equipment and tools provided and comply with the computer security and health measures at work.