The cross-border movement of natural persons for the supply of services (’mode 4’) is the least utilised mode of service delivery of the WTO General Agreement on Trade in Services (GATS). Why mode 4 is trailing behind has much to do with states’ reluctance to cede sovereignty over borders, admissions, work authorization and skills recognition. Where states cooperate on mobility, they are increasingly using mode 4 in preferential trade agreements (PTAs). At the same time, bilateral labour migration agreements (BLMAs) are utilised, even if driven by a different ambition. In this chapter, we explore the advances on mode 4 made by PTAs and uncover why some have been more forthcoming in adding mode 4 GATS-plus or GATS-extra advances than others. Second, we develop a typology the features unseen in the other three modes of service supply. Third, several PTAs added mode 4-plus in recreational services, caregiving, and food and beverages, such that PTAs overlap with foreign worker recruitment through BLMAs. Finally, we look beyond mode 4 to other legal pathways for migrant workers and suggest --in light of the Global Compact for Safe, Orderly and Regular Migration--interpreting BLMAs to be mutually supportive with mode 4 pathways of PTAs.