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# Clocked Hours Balance vs Hours Balance

To correctly understand the hours calculation, it's important to distinguish between two system accounts:

### 🔒 Clocked Hours Balance

This is a **system rule** (identified with a lock), so it cannot be modified.

It calculates the difference between:

- **Clocked hours** (actual check-in and check-out records)
- **Target hours** defined in the contract

This balance reflects what the person actually worked according to their clock-ins.

### 🔒 Hours Balance

This account calculates the difference between:

- **Planned shift hours**
- **Target hours** from the contract

This balance reflects what was expected to be worked, regardless of what was actually clocked.

![](https://storage.googleapis.com/helpdesk-haddock-images/haddock-hr/contracts-accounts-rules-and-transactions/clocked-hours-balance-vs-hours-balance/images/01-hours-balance.png)

### Key difference

- The **clocked hours balance** measures reality (what has been clocked).
- The **hours balance** measures planning (what was expected).

This difference makes it possible to detect deviations between what was planned and what was actually worked.

### Use in planning

Rules and accounts can be used to create views in planning.
By selecting these accounts, the system automatically calculates the balances for the selected period, making deviation analysis easier.