diff --git a/lib/src/button/sbb_icon_text_button.dart b/lib/src/button/sbb_icon_text_button.dart
index 96a17daf..a0037002 100644
--- a/lib/src/button/sbb_icon_text_button.dart
+++ b/lib/src/button/sbb_icon_text_button.dart
@@ -38,8 +38,14 @@ class _SBBIconTextButtonState extends State<SBBIconTextButton> {
 
   @override
   Widget build(BuildContext context) {
-    final style = SBBButtonStyles.of(context).iconTextStyle;
+    final buttonStyle = SBBButtonStyles.of(context);
+    final style = buttonStyle.iconTextStyle;
     final isEnabled = widget.onPressed != null;
+    final textStyle = _isPressed || _hasFocus
+        ? style?.textStyleHighlighted
+        : isEnabled
+            ? style?.textStyle
+            : style?.textStyleDisabled;
     return Semantics(
       button: true,
       child: SBBGroup(
@@ -83,15 +89,10 @@ class _SBBIconTextButtonState extends State<SBBIconTextButton> {
                             : style?.iconColorDisabled,
                   ),
                   const SizedBox(height: 4.0),
-                  Text(
+                  buttonStyle.buttonLabelBuilder(
+                    context,
                     widget.label,
-                    maxLines: 1,
-                    overflow: TextOverflow.ellipsis,
-                    style: _isPressed || _hasFocus
-                        ? style?.textStyleHighlighted
-                        : isEnabled
-                            ? style?.textStyle
-                            : style?.textStyleDisabled,
+                    style: textStyle,
                   ),
                 ],
               ),
diff --git a/lib/src/button/sbb_primary_button.dart b/lib/src/button/sbb_primary_button.dart
index f8bd5c63..6f91485e 100644
--- a/lib/src/button/sbb_primary_button.dart
+++ b/lib/src/button/sbb_primary_button.dart
@@ -18,15 +18,13 @@ import '../sbb_internal.dart';
 class SBBPrimaryButton extends StatelessWidget {
   const SBBPrimaryButton({
     super.key,
-    this.label,
-    this.child,
+    required this.label,
     this.isLoading = false,
     required this.onPressed,
     this.focusNode,
-  }) : assert(label != null && child == null || label == null && child != null);
+  });
 
-  final String? label;
-  final Widget? child;
+  final String label;
   final bool isLoading;
   final VoidCallback? onPressed;
   final FocusNode? focusNode;
@@ -44,29 +42,31 @@ class SBBPrimaryButton extends StatelessWidget {
   }
 
   ElevatedButton _buildThemedMobile(BuildContext context) {
+    final styles = SBBButtonStyles.of(context);
     return ElevatedButton(
-      style: SBBButtonStyles.of(context).primaryMobile,
+      style: styles.primaryMobile,
       onPressed: isLoading ? null : onPressed,
       focusNode: focusNode,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
           if (isLoading) SBBLoadingIndicator.tinyCloud(),
-          if (label == null) child! else SBBButtonContent(label: label!),
+          styles.buttonLabelBuilder(context, label),
         ],
       ),
     );
   }
 
   ElevatedButton _buildThemedWeb(BuildContext context) {
+    final styles = SBBButtonStyles.of(context);
     return ElevatedButton(
-      style: SBBButtonStyles.of(context).primaryWebLean,
+      style: styles.primaryWebLean,
       onPressed: onPressed,
       focusNode: focusNode,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          if (label == null) child! else SBBButtonContent(label: label!),
+          styles.buttonLabelBuilder(context, label),
         ],
       ),
     );
@@ -101,53 +101,42 @@ class SBBPrimaryButtonNegative extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final theme = Theme.of(context);
     switch (SBBBaseStyle.of(context).hostPlatform) {
       case HostPlatform.native:
-        return _buildThemedMobile(theme);
+        return _buildThemedMobile(context);
       case HostPlatform.web:
-        return _buildThemedWeb(theme);
+        return _buildThemedWeb(context);
       default:
-        return _buildThemedMobile(theme);
+        return _buildThemedMobile(context);
     }
   }
 
-  Widget _buildThemedMobile(ThemeData theme) {
+  Widget _buildThemedMobile(BuildContext context) {
+    final styles = SBBButtonStyles.of(context);
     return ElevatedButton(
-      style: theme.extension<SBBButtonStyles>()?.primaryMobileNegative,
+      style: styles.primaryMobileNegative,
       onPressed: isLoading ? null : onPressed,
       focusNode: focusNode,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
           if (isLoading) SBBLoadingIndicator.tinyCloud(),
-          Flexible(
-            child: Text(
-              label,
-              overflow: TextOverflow.ellipsis,
-              maxLines: 1,
-            ),
-          ),
+          styles.buttonLabelBuilder(context, label),
         ],
       ),
     );
   }
 
-  Widget _buildThemedWeb(ThemeData theme) {
+  Widget _buildThemedWeb(BuildContext context) {
+    final styles = SBBButtonStyles.of(context);
     return ElevatedButton(
-      style: theme.extension<SBBButtonStyles>()?.primaryWebNegative,
+      style: styles.primaryWebNegative,
       onPressed: onPressed,
       focusNode: focusNode,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.center,
         children: [
-          Flexible(
-            child: Text(
-              label,
-              overflow: TextOverflow.ellipsis,
-              maxLines: 1,
-            ),
-          ),
+          styles.buttonLabelBuilder(context, label),
         ],
       ),
     );
diff --git a/lib/src/button/sbb_secondary_button.dart b/lib/src/button/sbb_secondary_button.dart
index 2727978b..e5acfc0d 100644
--- a/lib/src/button/sbb_secondary_button.dart
+++ b/lib/src/button/sbb_secondary_button.dart
@@ -17,26 +17,25 @@ import '../sbb_internal.dart';
 class SBBSecondaryButton extends StatelessWidget {
   const SBBSecondaryButton({
     super. key,
-    this.label,
-    this.child,
+    required this.label,
     this.isLoading = false,
     required this.onPressed,
     this.focusNode,
-  }) : assert(label != null && child == null || label == null && child != null);
+  });
 
-  final String? label;
-  final Widget? child;
+  final String label;
   final bool isLoading;
   final VoidCallback? onPressed;
   final FocusNode? focusNode;
 
   @override
   Widget build(BuildContext context) {
-    final isWeb = SBBBaseStyle.of(context).hostPlatform == HostPlatform.web;
     final style = SBBBaseStyle.of(context);
+    final isWeb = style.hostPlatform == HostPlatform.web;
+    final buttonStyles = SBBButtonStyles.of(context);
     return OutlinedButton(
       style: isWeb
-          ? Theme.of(context).extension<SBBButtonStyles>()?.secondaryWebLean
+          ? buttonStyles.secondaryWebLean
           : Theme.of(context).outlinedButtonTheme.style?.copyWith(
                 // workaround for web
                 padding: SBBTheme.allStates(EdgeInsets.zero),
@@ -54,7 +53,7 @@ class SBBSecondaryButton extends StatelessWidget {
                 const SBBLoadingIndicator.tinySmoke(),
                 const SBBLoadingIndicator.tinyCement(),
               ),
-            if (label == null) child! else SBBButtonContent(label: label!),
+            buttonStyles.buttonLabelBuilder(context, label),
           ],
         ),
       ),
@@ -78,13 +77,16 @@ class SBBGhostButton extends StatelessWidget {
   Widget build(BuildContext context) {
     if (SBBBaseStyle.of(context).hostPlatform == HostPlatform.native)
       debugPrint('WARNING: Ghost button should only be used for web platform.');
+    final styles = SBBButtonStyles.of(context);
     return OutlinedButton(
-      style: Theme.of(context).extension<SBBButtonStyles>()?.ghostWebLean,
+      style: styles.ghostWebLean,
       onPressed: onPressed,
       focusNode: focusNode,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.center,
-        children: [SBBButtonContent(label: label)],
+        children: [
+          styles.buttonLabelBuilder(context, label),
+        ],
       ),
     );
   }
diff --git a/lib/src/button/sbb_tertiary_button.dart b/lib/src/button/sbb_tertiary_button.dart
index f18cc7f1..46510982 100644
--- a/lib/src/button/sbb_tertiary_button.dart
+++ b/lib/src/button/sbb_tertiary_button.dart
@@ -17,16 +17,14 @@ import '../sbb_internal.dart';
 class SBBTertiaryButtonLarge extends StatelessWidget {
   const SBBTertiaryButtonLarge({
     super.key,
-    this.label,
-    this.child,
+    required this.label,
     this.icon,
     this.isLoading = false,
     required this.onPressed,
     this.focusNode,
-  }) : assert(label != null && child == null || label == null && child != null);
+  });
 
-  final String? label;
-  final Widget? child;
+  final String label;
   final IconData? icon;
   final bool isLoading;
   final VoidCallback? onPressed;
@@ -35,6 +33,7 @@ class SBBTertiaryButtonLarge extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final style = SBBBaseStyle.of(context);
+    final buttonStyles = SBBButtonStyles.of(context);
     return TextButton(
       style: Theme.of(context).textButtonTheme.style?.copyWith(
             // workaround for web
@@ -58,7 +57,7 @@ class SBBTertiaryButtonLarge extends StatelessWidget {
                 padding: const EdgeInsetsDirectional.only(end: 4.0),
                 child: Icon(icon, size: sbbIconSizeSmall),
               ),
-            if (label == null) child! else SBBButtonContent(label: label!),
+            buttonStyles.buttonLabelBuilder(context, label),
           ],
         ),
       ),
@@ -124,11 +123,7 @@ class SBBTertiaryButtonSmall extends StatelessWidget {
                 padding: const EdgeInsetsDirectional.only(end: 4.0),
                 child: Icon(icon, size: sbbIconSizeSmall),
               ),
-            Text(
-              label,
-              overflow: TextOverflow.ellipsis,
-              maxLines: 1,
-            ),
+            buttonStyle.buttonLabelBuilder(context, label),
           ],
         ),
       ),
diff --git a/lib/src/sbb_internal.dart b/lib/src/sbb_internal.dart
index 33b3b25f..c4d0a72d 100644
--- a/lib/src/sbb_internal.dart
+++ b/lib/src/sbb_internal.dart
@@ -41,9 +41,11 @@ class SBBInternal {
 }
 
 class SBBButtonContent extends StatelessWidget {
-  const SBBButtonContent({Key? key, required this.label}) : super(key: key);
+  const SBBButtonContent({Key? key, required this.label, this.style})
+      : super(key: key);
 
   final String label;
+  final TextStyle? style;
 
   @override
   Widget build(BuildContext context) {
@@ -52,6 +54,7 @@ class SBBButtonContent extends StatelessWidget {
         label,
         overflow: TextOverflow.ellipsis,
         maxLines: 1,
+        style: style,
       ),
     );
   }
diff --git a/lib/src/theme/styles/src/sbb_button_styles.dart b/lib/src/theme/styles/src/sbb_button_styles.dart
index 88f38a51..b53114d7 100644
--- a/lib/src/theme/styles/src/sbb_button_styles.dart
+++ b/lib/src/theme/styles/src/sbb_button_styles.dart
@@ -3,6 +3,12 @@ import 'package:flutter/material.dart';
 import '../../../sbb_internal.dart';
 import '../sbb_styles.dart';
 
+typedef ButtonLabelBuilder = Widget Function(
+    BuildContext context,
+    String label, {
+    TextStyle? style,
+  });
+
 class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
   SBBButtonStyles({
     this.primaryStyle,
@@ -17,6 +23,7 @@ class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
     this.iconSmallBorderlessStyle,
     this.iconFormStyle,
     this.iconTextStyle,
+    required this.buttonLabelBuilder,
   });
 
   factory SBBButtonStyles.$default({required SBBBaseStyle baseStyle}) => SBBButtonStyles(
@@ -154,8 +161,13 @@ class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
           iconColorHighlighted: baseStyle.defaultTextColor,
           iconColorDisabled: SBBColors.metal,
         ),
+        buttonLabelBuilder: defaultButtonLabelBuilder,
       );
 
+  static ButtonLabelBuilder defaultButtonLabelBuilder = (_, String label, { TextStyle? style }) {
+    return SBBButtonContent(label: label, style: style);
+  };
+
   final SBBButtonStyle? primaryStyle;
   final SBBButtonStyle? primaryNegativeStyle;
   final SBBButtonStyle? secondaryStyle;
@@ -168,6 +180,7 @@ class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
   final SBBButtonStyle? iconSmallBorderlessStyle;
   final SBBButtonStyle? iconFormStyle;
   final SBBButtonStyle? iconTextStyle;
+  final ButtonLabelBuilder buttonLabelBuilder;
 
   static SBBButtonStyles of(BuildContext context) => Theme.of(context).extension<SBBButtonStyles>()!;
 
@@ -211,6 +224,7 @@ class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
     SBBButtonStyle? iconSmallBorderlessStyle,
     SBBButtonStyle? iconFormStyle,
     SBBButtonStyle? iconTextStyle,
+    ButtonLabelBuilder? buttonLabelBuilder,
   }) =>
       SBBButtonStyles(
         primaryStyle: primaryStyle ?? this.primaryStyle,
@@ -225,6 +239,7 @@ class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
         iconSmallBorderlessStyle: iconSmallBorderlessStyle ?? this.iconSmallBorderlessStyle,
         iconFormStyle: iconFormStyle ?? this.iconFormStyle,
         iconTextStyle: iconTextStyle ?? this.iconTextStyle,
+        buttonLabelBuilder: buttonLabelBuilder ?? this.buttonLabelBuilder,
       );
 
   @override
@@ -243,13 +258,16 @@ class SBBButtonStyles extends ThemeExtension<SBBButtonStyles> {
       iconSmallBorderlessStyle: iconSmallBorderlessStyle?.lerp(other.iconSmallBorderlessStyle, t),
       iconFormStyle: iconFormStyle?.lerp(other.iconFormStyle, t),
       iconTextStyle: iconTextStyle?.lerp(other.iconTextStyle, t),
+      buttonLabelBuilder: other.buttonLabelBuilder,
     );
   }
 }
 
 extension ButtonStylesExtension on SBBButtonStyles? {
   SBBButtonStyles merge(SBBButtonStyles? other) {
-    if (this == null) return other ?? SBBButtonStyles();
+    if (this == null) return other ?? SBBButtonStyles(
+      buttonLabelBuilder: SBBButtonStyles.defaultButtonLabelBuilder,
+    );
     return this!.copyWith(
       primaryStyle: this!.primaryStyle.merge(other?.primaryStyle),
       primaryNegativeStyle: this!.primaryNegativeStyle.merge(other?.primaryNegativeStyle),
@@ -263,6 +281,7 @@ extension ButtonStylesExtension on SBBButtonStyles? {
       iconSmallBorderlessStyle: this!.iconSmallBorderlessStyle.merge(other?.iconSmallBorderlessStyle),
       iconFormStyle: this!.iconFormStyle.merge(other?.iconFormStyle),
       iconTextStyle: this!.iconTextStyle.merge(other?.iconTextStyle),
+      buttonLabelBuilder: other?.buttonLabelBuilder ?? this!.buttonLabelBuilder,
     ) as SBBButtonStyles;
   }
 }