diff --git a/policyengine_us_data/datasets/cps/census_cps.py b/policyengine_us_data/datasets/cps/census_cps.py
index 287f54f5..f07cc3e3 100644
--- a/policyengine_us_data/datasets/cps/census_cps.py
+++ b/policyengine_us_data/datasets/cps/census_cps.py
@@ -303,4 +303,5 @@ class CensusCPS_2018(CensusCPS):
     "POTC_VAL",
     "PMED_VAL",
     "PEMCPREM",
+    "NOW_GRP",
 ]
diff --git a/policyengine_us_data/datasets/cps/cps.py b/policyengine_us_data/datasets/cps/cps.py
index eefbd2e6..8a2e129c 100644
--- a/policyengine_us_data/datasets/cps/cps.py
+++ b/policyengine_us_data/datasets/cps/cps.py
@@ -321,6 +321,8 @@ def children_per_parent(col: str) -> pd.DataFrame:
 
     cps["has_marketplace_health_coverage"] = person.MRK == 1
 
+    cps["has_esi"] = person["NOW_GRP"] == 1
+
     cps["cps_race"] = person.PRDTRACE
     cps["is_hispanic"] = person.PRDTHSP != 0