diff --git a/src/ckdb.c b/src/ckdb.c
index 4cccaf8c..7f219aef 100644
--- a/src/ckdb.c
+++ b/src/ckdb.c
@@ -420,6 +420,7 @@ K_STORE *miningpayouts_store;
 // PAYOUTS
 K_TREE *payouts_root;
 K_TREE *payouts_id_root;
+K_TREE *payouts_wid_root;
 K_LIST *payouts_free;
 K_STORE *payouts_store;
 cklock_t process_pplns_lock;
@@ -1086,6 +1087,7 @@ static void alloc_storage()
 	payouts_store = k_new_store(payouts_free);
 	payouts_root = new_ktree();
 	payouts_id_root = new_ktree();
+	payouts_wid_root = new_ktree();
 
 	auths_free = k_new_list("Auths", sizeof(AUTHS),
 					ALLOC_AUTHS, LIMIT_AUTHS, true);
@@ -1304,6 +1306,7 @@ static void dealloc_storage()
 	FREE_ALL(poolstats);
 	FREE_ALL(auths);
 
+	FREE_TREE(payouts_wid);
 	FREE_TREE(payouts_id);
 	FREE_TREE(payouts);
 	FREE_STORE_DATA(payouts);
diff --git a/src/ckdb.h b/src/ckdb.h
index 8ab5cf26..6ae1bdd4 100644
--- a/src/ckdb.h
+++ b/src/ckdb.h
@@ -55,7 +55,7 @@
 
 #define DB_VLOCK "1"
 #define DB_VERSION "1.0.2"
-#define CKDB_VERSION DB_VERSION"-1.229"
+#define CKDB_VERSION DB_VERSION"-1.230"
 
 #define WHERE_FFL " - from %s %s() line %d"
 #define WHERE_FFL_HERE __FILE__, __func__, __LINE__
@@ -1600,6 +1600,7 @@ typedef struct payouts {
 
 extern K_TREE *payouts_root;
 extern K_TREE *payouts_id_root;
+extern K_TREE *payouts_wid_root;
 extern K_LIST *payouts_free;
 extern K_STORE *payouts_store;
 extern cklock_t process_pplns_lock;
@@ -2318,9 +2319,11 @@ extern K_TREE *upd_add_mu(K_TREE *mu_root, K_STORE *mu_store, int64_t userid,
 			  double diffacc);
 extern cmp_t cmp_payouts(K_ITEM *a, K_ITEM *b);
 extern cmp_t cmp_payouts_id(K_ITEM *a, K_ITEM *b);
+extern cmp_t cmp_payouts_wid(K_ITEM *a, K_ITEM *b);
 extern K_ITEM *find_payouts(int32_t height, char *blockhash);
 extern K_ITEM *find_last_payouts();
 extern K_ITEM *find_payoutid(int64_t payoutid);
+extern K_ITEM *find_payouts_wid(int64_t workinfoidend, K_TREE_CTX *ctx);
 extern double payout_stats(PAYOUTS *payouts, char *statname);
 extern bool process_pplns(int32_t height, char *blockhash, tv_t *now);
 extern cmp_t cmp_auths(K_ITEM *a, K_ITEM *b);
@@ -2354,6 +2357,7 @@ extern bool workmarkers_generate(PGconn *conn, char *err, size_t siz,
 				 char *by, char *code, char *inet, tv_t *cd,
 				 K_TREE *trf_root, bool none_error);
 extern bool reward_shifts(PAYOUTS *payouts, bool lock, int delta);
+extern bool shift_rewards(K_ITEM *wm_item);
 extern cmp_t cmp_marks(K_ITEM *a, K_ITEM *b);
 extern K_ITEM *find_marks(int64_t workinfoid);
 extern const char *marks_marktype(char *marktype);
diff --git a/src/ckdb_cmd.c b/src/ckdb_cmd.c
index ed5e9786..11c9bac1 100644
--- a/src/ckdb_cmd.c
+++ b/src/ckdb_cmd.c
@@ -5541,7 +5541,7 @@ static char *cmd_stats(__maybe_unused PGconn *conn, char *cmd, char *id,
 	USEINFO(marks, 1, 1);
 	USEINFO(blocks, 1, 1);
 	USEINFO(miningpayouts, 1, 1);
-	USEINFO(payouts, 1, 2);
+	USEINFO(payouts, 1, 3);
 	USEINFO(auths, 1, 1);
 	USEINFO(poolstats, 1, 1);
 	USEINFO(userstats, 2, 1);
diff --git a/src/ckdb_data.c b/src/ckdb_data.c
index 7942a790..0700f727 100644
--- a/src/ckdb_data.c
+++ b/src/ckdb_data.c
@@ -3141,6 +3141,22 @@ cmp_t cmp_payouts_id(K_ITEM *a, K_ITEM *b)
 	return c;
 }
 
+/* order by workinfoidend asc,expirydate asc
+ * This must use workinfoidend, not workinfoidstart, since a change
+ *  in the payout PPLNS N could have 2 payouts with the same start,
+ *  but currently there is only one payout per block
+ *   i.e. workinfoidend can only have one payout */
+cmp_t cmp_payouts_wid(K_ITEM *a, K_ITEM *b)
+{
+	PAYOUTS *pa, *pb;
+	DATA_PAYOUTS(pa, a);
+	DATA_PAYOUTS(pb, b);
+	cmp_t c = CMP_BIGINT(pa->workinfoidend, pb->workinfoidend);
+	if (c == 0)
+		c = CMP_TV(pa->expirydate, pb->expirydate);
+	return c;
+}
+
 K_ITEM *find_payouts(int32_t height, char *blockhash)
 {
 	PAYOUTS payouts;
@@ -3189,6 +3205,25 @@ K_ITEM *find_payoutid(int64_t payoutid)
 	return find_in_ktree(payouts_id_root, &look, cmp_payouts_id, ctx);
 }
 
+// First payouts workinfoidend equal or before workinfoidend
+K_ITEM *find_payouts_wid(int64_t workinfoidend, K_TREE_CTX *ctx)
+{
+	PAYOUTS payouts;
+	K_TREE_CTX ctx0[1];
+	K_ITEM look;
+
+	if (ctx == NULL)
+		ctx = ctx0;
+
+	payouts.workinfoidend = workinfoidend+1;
+	payouts.expirydate.tv_sec = 0;
+	payouts.expirydate.tv_usec = 0;
+
+	INIT_PAYOUTS(&look);
+	look.data = (void *)(&payouts);
+	return find_before_in_ktree(payouts_wid_root, &look, cmp_payouts_wid, ctx);
+}
+
 /* Values from payout stats, returns -1 if statname isn't found
  * If code needs a value then it probably really should be a new payouts field
  *  rather than stored in the stats passed to the pplns2 web page
@@ -4635,6 +4670,35 @@ bool reward_shifts(PAYOUTS *payouts, bool lock, int delta)
 	return did_one;
 }
 
+// (re)calculate rewards for a shift
+bool shift_rewards(K_ITEM *wm_item)
+{
+	PAYOUTS *payouts = NULL;
+	K_TREE_CTX ctx[1];
+	WORKMARKERS *wm;
+	K_ITEM *p_item;
+	int rewards = 0;
+
+	DATA_WORKMARKERS(wm, wm_item);
+
+	// Deadlock risk since calling code should have workmarkers locked
+	K_WLOCK(payouts_free);
+	p_item = find_payouts_wid(wm->workinfoidend, ctx);
+	DATA_PAYOUTS_NULL(payouts, p_item);
+	// a workmarker should not cross a payout boundary
+	while (p_item && payouts->workinfoidstart <= wm->workinfoidstart &&
+	       wm->workinfoidend <= payouts->workinfoidend) {
+		if (CURRENT(&(payouts->expirydate)))
+			rewards++;
+		p_item = prev_in_ktree(ctx);
+		DATA_PAYOUTS_NULL(payouts, p_item);
+	}
+	K_WUNLOCK(payouts_free);
+
+	wm->rewards = rewards;
+	return (rewards > 0);
+}
+
 // order by expirydate asc,workinfoid asc
 // TODO: add poolinstance
 cmp_t cmp_marks(K_ITEM *a, K_ITEM *b)
diff --git a/src/ckdb_dbio.c b/src/ckdb_dbio.c
index b4fd8eee..e6552ed2 100644
--- a/src/ckdb_dbio.c
+++ b/src/ckdb_dbio.c
@@ -5119,12 +5119,15 @@ void payouts_add_ram(bool ok, K_ITEM *p_item, K_ITEM *old_p_item, tv_t *cd)
 			DATA_PAYOUTS(oldp, old_p_item);
 			payouts_root = remove_from_ktree(payouts_root, old_p_item, cmp_payouts);
 			payouts_id_root = remove_from_ktree(payouts_id_root, old_p_item, cmp_payouts_id);
+			payouts_wid_root = remove_from_ktree(payouts_wid_root, old_p_item, cmp_payouts_wid);
 			copy_tv(&(oldp->expirydate), cd);
 			payouts_root = add_to_ktree(payouts_root, old_p_item, cmp_payouts);
 			payouts_id_root = add_to_ktree(payouts_id_root, old_p_item, cmp_payouts_id);
+			payouts_wid_root = add_to_ktree(payouts_wid_root, old_p_item, cmp_payouts_wid);
 		}
 		payouts_root = add_to_ktree(payouts_root, p_item, cmp_payouts);
 		payouts_id_root = add_to_ktree(payouts_id_root, p_item, cmp_payouts_id);
+		payouts_wid_root = add_to_ktree(payouts_wid_root, p_item, cmp_payouts_wid);
 		k_add_head(payouts_store, p_item);
 	}
 	K_WUNLOCK(payouts_free);
@@ -5431,9 +5434,11 @@ K_ITEM *payouts_full_expire(PGconn *conn, int64_t payoutid, tv_t *now, bool lock
 	DATA_PAYOUTS(payouts, po_item);
 	payouts_root = remove_from_ktree(payouts_root, po_item, cmp_payouts);
 	payouts_id_root = remove_from_ktree(payouts_id_root, po_item, cmp_payouts_id);
+	payouts_wid_root = remove_from_ktree(payouts_wid_root, po_item, cmp_payouts_wid);
 	copy_tv(&(payouts->expirydate), now);
 	payouts_root = add_to_ktree(payouts_root, po_item, cmp_payouts);
 	payouts_id_root = add_to_ktree(payouts_id_root, po_item, cmp_payouts_id);
+	payouts_wid_root = add_to_ktree(payouts_wid_root, po_item, cmp_payouts_wid);
 
 	mp_item = first_miningpayouts(payoutid, mp_ctx);
 	DATA_MININGPAYOUTS_NULL(mp, mp_item);
@@ -5643,6 +5648,7 @@ bool payouts_fill(PGconn *conn)
 
 		payouts_root = add_to_ktree(payouts_root, item, cmp_payouts);
 		payouts_id_root = add_to_ktree(payouts_id_root, item, cmp_payouts_id);
+		payouts_wid_root = add_to_ktree(payouts_wid_root, item, cmp_payouts_wid);
 		k_add_head(payouts_store, item);
 
 		if (CURRENT(&(row->expirydate)) && PAYGENERATED(row->status))
@@ -6726,6 +6732,8 @@ unparam:
 								   cmp_workmarkers_workinfoid);
 		}
 		if (wm_item) {
+			shift_rewards(wm_item);
+
 			workmarkers_root = add_to_ktree(workmarkers_root,
 							wm_item,
 							cmp_workmarkers);