If an online loan credit card is overdue, the following measures should be taken:

1. Contact the borrower or bank as soon as possible: Communicate with the borrower or credit card issuer immediately, inform the overdue situation and Find solutions. Early communication may help reduce interest and penalties.

2. Understand overdue fees and consequences: Learn more about overdue fees, penalty interest, and possible legal consequences. This will enable you to make informed decisions and inform negotiations.

3. Develop a repayment plan: Develop a reasonable repayment plan based on your own financial situation. Try to return overdue amounts on time to reduce further overdue charges and restore your good credit history.

4. Get help from professional agencies: If you have difficulty handling it on your own, you can seek help from professional counseling or debt management agencies. They can provide appropriate advice and negotiate with borrowers.

5. Improve financial management capabilities: Review personal financial status, improve financial management capabilities, formulate budget plans, and avoid falling into overdue difficulties again.

Summary: After an online loan credit card is overdue, contact the borrower or card-issuing bank in a timely manner and formulate a reasonable repayment plan. If necessary, you can seek help from professional organizations. At the same time, improve personal financial management capabilities to avoid overdue payments again.

Extended information: Late repayments may cause damage to your credit history and affect future loan and credit card applications. According to relevant Chinese laws, borrowers have the right to take legal measures to recover overdue debts, such as suing in court, freezing bank accounts and other measures. Therefore, actively handling overdue situations is the key to protecting your own rights and interests.