Assuring worker health both increases worker productivity and aids in preventing potential microbial contamination of crops. An infected employee, whether he/she is showing symptoms or not, can easily contaminate fresh produce if they do not practice good hygiene, such as washing their hands after sneezing, touching hair or other body parts, or using the restroom.
General symptoms that flag an employee with the potential for causing microbial contamination of produce include:
Employees with gastrointestinal distress or open wounds can contaminate fresh fruits and vegetables through handling. Persons that do not show any symptoms of disease can transmit microbial pathogens. Many micro-organisms can be guests in the human body without evidence of disease and can be spread to others by the human hosts. Workers should be trained to report any disease symptoms to supervisors.
Sick employees should not participate in activities that involve direct contact with the fresh produce or with packaging material until they have clearance from a licensed healthcare provider.
Ideally, agricultural workers should have access to a health care system that is accessible to them in their workplace. Workers have been shown to be more willing to report symptoms of illness or disease if they have access to healthcare professionals. Information on and contact details of medical service providers that should be contacted in case of emergency must be prominently displayed.
Any worker with exposed wounds that can directly contaminate fresh produce should have these wounds properly disinfected and covered before participating in production and handling activities. A first aid kit with supplies for treating worker injuries should be readily available at the worksite.
It is also important for employers to provide fruit and vegetable handlers with a training program on good food handling and hygiene practices. The possibility of produce contamination is directly related to the quality of the worker training program.
Proper hygiene procedures should be established and included in hygiene and health training programs. All employees including supervisors, temporary personnel, part-time and full-time workers should participate in these activities. The level of knowledge required should be set according to the type of operation, responsibilities, and type of activities in which the employee participates.
Training should be reinforced constantly. Demonstrations of procedures are usually more effective than simple verbal instructions. Training should be in the language and dialect of the employees to ensure comprehension and trainers should consider cultural aversions and ingrained practices when planning training.
Water for human consumption should be potable, which means that it should be free of micro-organisms and chemical substances that can jeopardise the health of the person consuming it. Ensuring the availability of potable drinking water for field workers can minimise the risk of them developing disease and consequently contaminating fresh produce.
Precautions that should be taken for the handling of drinking water in the fields and packing areas include:
Frequent microbiological and physical evaluation should be performed on drinking water when the water is being stored or treated on-site. Simple evaluations of the colour, odour and taste of water should be performed as part of the daily monitoring procedures. If any of the water quality tests indicate the quality is not adequate, the water should be replaced to reduce the chances of infection and the proper authorities should be notified of the problem.
The responsibility for reducing or avoiding contamination during primary production falls heavily on agricultural workers. Employers can provide training and other resources to educate workers, but the effectiveness of the program, in the end, relies on the worker’s understanding and implementation of personal hygiene and safety practices.
Therefore, management should provide workers with information about acceptable hygiene practices, ensure it is understood, and send a clear signal to workers about the importance of these practices.
Hand washing is required:
The basic requirements for sanitary field stations are: