diff --git a/drools-model/drools-mvel-compiler/src/main/java/org/drools/mvelcompiler/ast/FieldToAccessorTExpr.java b/drools-model/drools-mvel-compiler/src/main/java/org/drools/mvelcompiler/ast/FieldToAccessorTExpr.java
index d1f04a2bb85..fb4047e7804 100644
--- a/drools-model/drools-mvel-compiler/src/main/java/org/drools/mvelcompiler/ast/FieldToAccessorTExpr.java
+++ b/drools-model/drools-mvel-compiler/src/main/java/org/drools/mvelcompiler/ast/FieldToAccessorTExpr.java
@@ -21,6 +21,7 @@
 import java.lang.reflect.Method;
 import java.lang.reflect.ParameterizedType;
 import java.lang.reflect.Type;
+import java.math.BigDecimal;
 import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
@@ -30,6 +31,7 @@
 import com.github.javaparser.ast.expr.EnclosedExpr;
 import com.github.javaparser.ast.expr.Expression;
 import com.github.javaparser.ast.expr.MethodCallExpr;
+import org.drools.mvelcompiler.util.BigDecimalArgumentCoercion;
 import org.drools.util.MethodUtils;
 
 import static com.github.javaparser.ast.NodeList.nodeList;
@@ -72,7 +74,17 @@ public Node toJavaExpression() {
                 .map(this::convertToStringIfNeeded)
                 .collect(Collectors.toList());
 
-        return new MethodCallExpr((Expression) scope.toJavaExpression(), accessor.getName(), nodeList(expressionArguments));
+        Optional<Type> rhsType = this.arguments.stream()
+                .findFirst()
+                .flatMap(TypedExpression::getType);
+
+        // Right is BigDecimal, left is other, coerce
+        if(rhsType.isPresent() && rhsType.get().equals(BigDecimal.class) && !type.equals(BigDecimal.class)) {
+            Expression coercedExpression = new BigDecimalArgumentCoercion().coercedArgument(BigDecimal.class, (Class<?>)type, expressionArguments.get(0));
+            return new MethodCallExpr((Expression) scope.toJavaExpression(), accessor.getName(), nodeList(coercedExpression));
+        } else {
+            return new MethodCallExpr((Expression) scope.toJavaExpression(), accessor.getName(), nodeList(expressionArguments));
+        }
     }
 
     private Expression convertToStringIfNeeded(TypedExpression argumentExpression) {
diff --git a/drools-model/drools-mvel-compiler/src/test/java/org/drools/Person.java b/drools-model/drools-mvel-compiler/src/test/java/org/drools/Person.java
index 53c4a508f6e..e99d6887c16 100644
--- a/drools-model/drools-mvel-compiler/src/test/java/org/drools/Person.java
+++ b/drools-model/drools-mvel-compiler/src/test/java/org/drools/Person.java
@@ -28,6 +28,16 @@ public class Person {
 
     private String name;
     private int age;
+    private long longValue;
+    private short shortValue;
+    private double doubleValue;
+    private float floatValue;
+
+    private Integer integerBoxed;
+    private Long longBoxed;
+    private Short shortBoxed;
+    private Double doubleBoxed;
+    private Float floatBoxed;
 
     private Person parent;
     private Address address;
@@ -122,4 +132,76 @@ public void setAddresses(List<Address> addresses) {
     public boolean isEven(int value) {
         return true;
     }
+
+    public long getLongValue() {
+        return longValue;
+    }
+
+    public void setLongValue(long longValue) {
+        this.longValue = longValue;
+    }
+
+    public short getShortValue() {
+        return shortValue;
+    }
+
+    public void setShortValue(short shortValue) {
+        this.shortValue = shortValue;
+    }
+
+    public double getDoubleValue() {
+        return doubleValue;
+    }
+
+    public void setDoubleValue(double doubleValue) {
+        this.doubleValue = doubleValue;
+    }
+
+    public float getFloatValue() {
+        return floatValue;
+    }
+
+    public void setFloatValue(float floatValue) {
+        this.floatValue = floatValue;
+    }
+
+    public Integer getIntegerBoxed() {
+        return integerBoxed;
+    }
+
+    public void setIntegerBoxed(Integer integerBoxed) {
+        this.integerBoxed = integerBoxed;
+    }
+
+    public Long getLongBoxed() {
+        return longBoxed;
+    }
+
+    public void setLongBoxed(Long longBoxed) {
+        this.longBoxed = longBoxed;
+    }
+
+    public Short getShortBoxed() {
+        return shortBoxed;
+    }
+
+    public void setShortBoxed(Short shortBoxed) {
+        this.shortBoxed = shortBoxed;
+    }
+
+    public Double getDoubleBoxed() {
+        return doubleBoxed;
+    }
+
+    public void setDoubleBoxed(Double doubleBoxed) {
+        this.doubleBoxed = doubleBoxed;
+    }
+
+    public Float getFloatBoxed() {
+        return floatBoxed;
+    }
+
+    public void setFloatBoxed(Float floatBoxed) {
+        this.floatBoxed = floatBoxed;
+    }
 }
diff --git a/drools-model/drools-mvel-compiler/src/test/java/org/drools/mvelcompiler/MvelCompilerTest.java b/drools-model/drools-mvel-compiler/src/test/java/org/drools/mvelcompiler/MvelCompilerTest.java
index 4db881fb600..7de5965da1e 100644
--- a/drools-model/drools-mvel-compiler/src/test/java/org/drools/mvelcompiler/MvelCompilerTest.java
+++ b/drools-model/drools-mvel-compiler/src/test/java/org/drools/mvelcompiler/MvelCompilerTest.java
@@ -834,6 +834,116 @@ public void testBigDecimalArithmeticWithConversionFromInteger() {
                      "}");
     }
 
+    @Test
+    public void testBigDecimalAssignmentToInt() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.age = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setAge($p.getSalary().intValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToIntegerBoxed() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.integerBoxed = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setIntegerBoxed($p.getSalary().intValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToLong() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.longValue = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setLongValue($p.getSalary().longValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToLongBoxed() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.longBoxed = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setLongBoxed($p.getSalary().longValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToShort() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.shortValue = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setShortValue($p.getSalary().shortValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToShortBoxed() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.shortBoxed = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setShortBoxed($p.getSalary().shortValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToDouble() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.doubleValue = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setDoubleValue($p.getSalary().doubleValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToDoubleBoxed() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.doubleBoxed = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setDoubleBoxed($p.getSalary().doubleValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToFloat() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.floatValue = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setFloatValue($p.getSalary().floatValue());\n" +
+                        "}");
+    }
+
+    @Test
+    public void testBigDecimalAssignmentToFloatBoxed() {
+        test(ctx -> ctx.addDeclaration("$p", Person.class),
+                "{ " +
+                        "    $p.floatBoxed = $p.salary;\n" +
+                        "}",
+                "{ " +
+                        "    $p.setFloatBoxed($p.getSalary().floatValue());\n" +
+                        "}");
+    }
+
     @Test
     public void testBigDecimalPromotionAllFourOperations() {
         test(ctx -> ctx.addDeclaration("$p", Person.class),