This is from a Norfolk-Southern ad for Conductors:

"The conductor position can often mean a significant lifestyle change as the work schedule is often non-traditional and requires many to be available to work on a 90-minute to 2-hour notice
Individuals are responsible for providing their own transportation to the area
A CT will expect to work a schedule similar to that of a regular conductor
As a conductor you will most likely be assigned to a conductors' extra board
Conductor extra boards have schedules with a minimum of two rest days for every six consecutive working days
While not on your rest days, you are subject to be called to work 24 hours a day, on an as-needed basis
Extra board work schedules are irregular and are determined by business needs
You will be required to report to your work location within a 90-minute to 2-hour notice
A conductor should expect to work outdoors in all types of weather conditions
This may mean working in poor weather conditions day or night"
During training a Conductor Trainee (CT) will earn $25 per hour, with a minimum $200 in earnings per shift

Additionally, CTs are eligible for an on-the-job training incentive of $300 per bi-weekly pay period

After training, conductors earn an average of $70,000 in their first year"

Here is the pay info for Wheeling & Lake Erie Railroad (admittedly, not a Class I railroad):

"Wages
Brakeman: $22.12/hr
Conductor: $24.35/hr
Engineer: $26.52/hr
The annual earnings potential ranges from the low $50k to mid $80K depending upon the number of hours worked"