You can also use Form W-4 when you have more than one employer. Page 1 step two can be use for multiple jobs or have a spouse that works. 2(a) directs you to use the estimator at www.irs.gov/W4App, etc. Step tow is a worksheet for multiple jobs, etc. See enclosed link to form W-4 and the instructions.
Link https://www.irs.gov/pub/irs-pdf/fw4.pdf
