Like all markets, the market for labour is imperfect and characterised by information asymmetry. On the one hand, those looking for a job are unlikely to know about all potential employment opportunities, or all the details of the post and the employer expectations that come with the role. On the other hand, employers cannot know everything about all possible candidates, their history, and their suitability for the work. This is particularly true of skilled roles, and job searches can be both lengthy and expensive. Modern labour markets have developed numerous ways of dealing with the issue of asymmetric information. Labour market intermediaries, for example, play an important role in linking employers with employees, through recruitment or employment agencies, the advertising of job opportunities on internet search boards, targeted e-mailing lists, newspapers, job centres, and even street corner day labour queues. There are also a number of ‘signalling devices’ which are used to demonstrate a candidate’s suitability for a particular role, such as educational or professional qualifications, and the use of references and personal recommendations. None of these methods are perfect, but they do go some way towards alleviating the risk, uncertainty, and high transaction costs inherent in the finding and hiring of labour. This paper explores whether any comparable means were used to overcome similar problems in the Roman labour market. It considers the evidence for labour market intermediaries, such as labour contractors, employment agencies, and informal labour exchanges; the potential role of ‘professionalisation’ and qualifications, in particular apprenticeships; the utilisation of networks and personal recommendations, including the possible use of letters of recommendation, and both formal and informal associations, ranging from collegia and groups of migrant traders to local networks within urban neighbourhoods and rural communities; and finally, the extra-economic coercion of workers and the employment of dependent labour, including the enslaved, formerly enslaved, and clients.