Literacy is a social practice central to sharing of knowledge and skills in the workplace. Workplaces increasingly demand workers who take on multiple roles and share and manage knowledge in new ways, so high levels of worker literacy and worker collaboration are increasingly important. Workplace training must facilitate development of active and interactive literacy and numeracy skills. An active literacy is in turn a central part of effective learning. Under the Australian National Training Framework, private training organizations predominantly use industry training packages to provide vocational training in Australia. Since their staff may not be trained in teaching and learning practices, effectiveness of workplace training depends on how well they interpret and deliver training packages. A study of horticulture industry trainers and trainees has found that trainees learn in collaboration with peers in the workplace and appreciate practical, on-the-job training; speaking and listening skills are vital tools in conversations about the process of training; theoretical and practical training must be balanced; professional development through informal networks and formal training workshops is important for trainers; equitable access to training requires bridging courses and support throughout training; ongoing review processes for training packages are important; and trainers should be supported with adequate resource material. (Contains a 57-item bibliography.) (YLB)