What is "excess HSA" contributions mean?

[garylgann]

I have not made excess contributions at work according to the directions.

[JulieR]

For 2018, the maximum total amount you and/or your employer can contribute to your HSA account is $3,450 for an individual plan, or $6,900 for a family plan. This is the sum of both your contribution and your employer's.

If you're 55 or older, you're also allowed to contribute up to an additional $1,000 for a maximum of $4,450 (individual) or $7,900 (family).

The following TurboTax FAQ further explains HSA contribution limits. https://ttlc.intuit.com/replies/4788059

[JulieR]

Since you did not provide any dollar amounts the answer provided was a general response.  Can you provide more details in your question?