diff --git a/NthHighestSalary.txt b/NthHighestSalary.txt
new file mode 100644
index 0000000..61e16f9
--- /dev/null
+++ b/NthHighestSalary.txt
@@ -0,0 +1,8 @@
+import pandas as pd
+
+def nth_highest_salary(employee: pd.DataFrame, N: int) -> pd.DataFrame:
+    df = employee['salary'].drop_duplicates().sort_values(ascending=False)
+    if N > len(df) or N <= 0:  
+        return pd.DataFrame({f'getNthHighestSalary({N})': [None]})
+    df2 = df.iloc[N-1]
+    return pd.DataFrame({f'getNthHighestSalary({N})':[df2]})
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diff --git a/secondHighestSalary.txt b/secondHighestSalary.txt
new file mode 100644
index 0000000..e6f074f
--- /dev/null
+++ b/secondHighestSalary.txt
@@ -0,0 +1,7 @@
+import pandas as pd
+
+def second_highest_salary(employee: pd.DataFrame) -> pd.DataFrame:
+    df = employee['salary'].drop_duplicates().sort_values(ascending=False).head(2)
+    if len(df)<2:
+        return pd.DataFrame({'SecondHighestSalary':[None]})
+    return pd.DataFrame(df).tail(1).rename(columns={'salary':'SecondHighestSalary'})
\ No newline at end of file