You can roll over your old 401(k) into your new employer's program.
Do You Know What to Do with Your 401(k)?
Choices to Make About Your 401(k)

Stay Put
If you're happy with your former 401(k), you can leave your account where it is.

Take Your Plan

Understand Your Choices
You can elect to roll over your traditional 401(k) into a traditional IRA.

What Should You Do With Your 401(k)?
Every time you change jobs, you have some decisions to make about your old 401(k). In this ebook, we outline your four choices and explain the considerations of each.