diff --git a/crates/payload/basic/src/lib.rs b/crates/payload/basic/src/lib.rs
index 5583d00a0..2feacb6c8 100644
--- a/crates/payload/basic/src/lib.rs
+++ b/crates/payload/basic/src/lib.rs
@@ -17,8 +17,8 @@ use reth_payload_builder::{
     PayloadJobGenerator,
 };
 use reth_primitives::{
-    bloom::logs_bloom, bytes::Bytes, proofs, Block, ChainSpec, Hardfork, Head, Header,
-    IntoRecoveredTransaction, Receipt, SealedBlock, EMPTY_OMMER_ROOT, U256,
+    bloom::logs_bloom, bytes::Bytes, constants::SLOT_DURATION, proofs, Block, ChainSpec, Hardfork,
+    Head, Header, IntoRecoveredTransaction, Receipt, SealedBlock, EMPTY_OMMER_ROOT, U256,
 };
 use reth_provider::{BlockProvider, EvmEnvProvider, PostState, StateProviderFactory};
 use reth_revm::{
@@ -227,7 +227,7 @@ impl Default for BasicPayloadJobGeneratorConfig {
         Self {
             interval: Duration::from_secs(1),
             // 12s slot time
-            deadline: Duration::from_secs(12),
+            deadline: SLOT_DURATION,
             max_payload_tasks: 3,
         }
     }
diff --git a/crates/primitives/src/constants.rs b/crates/primitives/src/constants.rs
index 65d015f42..36547aba2 100644
--- a/crates/primitives/src/constants.rs
+++ b/crates/primitives/src/constants.rs
@@ -2,10 +2,20 @@
 
 use crate::{H256, U256};
 use hex_literal::hex;
+use std::time::Duration;
 
 /// The first four bytes of the call data for a function call specifies the function to be called.
 pub const SELECTOR_LEN: usize = 4;
 
+/// The duration of a slot in seconds.
+///
+/// This is the time period of 12 seconds in which a randomly chosen validator has time to propose a
+/// block.
+pub const SLOT_DURATION: Duration = Duration::from_secs(12);
+
+/// An EPOCH is a series of 32 slots (~6.4min).
+pub const EPOCH_DURATION: Duration = Duration::from_secs(12 * 32);
+
 /// The minimal value the basefee can decrease to.
 ///
 /// The `BASE_FEE_MAX_CHANGE_DENOMINATOR` <https://eips.ethereum.org/EIPS/eip-1559> is `8`, or 12.5%.