In days of yore, you did need an ATPL for an IFR operation, and obviously 1500 hours. But no bullshit about the last three years. What conceivable difference could that make? It didn't matter whether your time was multi or single.
Hey Ogee,
Back in the day's of yore (now I'm gonna have that word stuck in my head all week

) the 3 years was in the same class of commercial air service. They were quite firm about it then two. To wit: they didn't want some bonehead walking in who understood squat about the operating environment, or
your business in particular. One of the genuine plusses was that generally it meant promotion from within rather than
the owner's uncle's brother's cousin's next door neighbor's kid.