The thing about needing an extra hand I that you will know you need it, the workload will tell on your Company or business at that point you need to look for extra hands.A veteran businessman in a tv interview said that the best reason for hiring an additional employee is when the workload is not comfortable anymore to the present number of employees. Due to the heavy workload makes the present employees to work over time too often. The per hour rate of overtime is expensive so the best solution to avoid overtime work is to hire an additional worker. However, when the business is not doing good financially that hiring is not affordable then there is a big problem with the management.
It's is bad business decision to hire extra hands for the reason that just want to get people engaged, whoever is hired must be relevant to the work and contribute their quota.