Yes, you can contribute to an IRA even if you have a 401(k) plan at work. However, your deduction for the IRA may be limited or not allowed based on your Modified Adjusted Gross Income.
Go to this IRS website for information on contributions to an IRA - https://www.irs.gov/retirement-plans/2019-ira-deduction-limits-effect-of-modified-agi-on-deduction-i...
IRA contribution limit if under age 50 in 2019 is $6,000 and $7,000 if age 50 or older.
