Digital labour platforms have been increasingly gaining popularity over the past decade. In particular, there has been much debate about workers’ motivations and working conditions on microtask platforms. There exists little evidence on whether dependence on digital microtask platforms provides work- ers with work and income security in the long term and whether it provides opportunities for skill development. This paper explores the extent to which the seemingly flexible platform work ensures work and income security and pro- vides opportunities for skill development for workers with different levels of experience, based on novel survey data collected on five globally operating microtask platforms and in-depth interviews with workers. The findings show that despite high financial dependence on this work, returns to experience on the platform are meagre in terms of earnings, and highly experienced workers face the same risks as new entrants with regard to discrimination, high work intensity, lack of autonomy and control over work, and social protection. There is also a skills gap between the nature of tasks available on these microtask platforms and the workers’ education levels. Finally, experience does not ensure that workers have the opportunities to undertake complex and challenging tasks, and the possibilities to develop their skills and improve career prospects are limited.