This can have couple of reasons:
1. You just signed up with your contract. The first payments can take up to 48 hours
2. It's too early in the day and the payments have not been sent yet
3. You did not set up payout address
4. Amount to be paid to your address is too small and balanced toward your account
Payments in general are conducted within 24 hours _after_ a full mining day, timezone UTC.
In case you did not receive a ticket _after_ this timeframe, feel free to open a ticket.