This may include utilizing more flexible non-union labor such as in split shifts. Split shifts are shifts in which a worker logs two four-hour shifts in the same day rather than a continuous shift of eight hours or more. This model fits well with peak hour travel in which operators are needed in the morning and afternoon but not necessarily in the middle of the day. Split shifts avoid overtime pay.
Contracted service is also seen as flexible over the long-term. Transit agencies view contracted labor as easier to initiate and terminate than directly hired labor. Rather than directly hiring workers for experimental routes, transit agencies may benefit from reduced political risk by contracting for service until the service is deemed to be permanent. Along these same lines, contracted labor is viewed as faster to initiate service than directly contracted labor. For new service routes, transit agencies may hire contracted operators in order to expedite start of service. <ref
name="Iseki et al. 2006 " />
=Efficiency achieved through contracting=