diff --git a/frontend/src/components/Contributions/ContributionForm.vue b/frontend/src/components/Contributions/ContributionForm.vue
index 5c00cd54a..84eb7f31c 100644
--- a/frontend/src/components/Contributions/ContributionForm.vue
+++ b/frontend/src/components/Contributions/ContributionForm.vue
@@ -9,12 +9,11 @@
         id="contribution-date"
         :model-value="formValues.date"
         name="date"
-        :state="dataFieldMeta.valid"
         :label="$t('contribution.selectDate')"
         :no-flip="true"
         class="mb-4 bg-248"
         type="date"
-        :schema-description="schemaDescription.fields.date"
+        :rules="validationSchema"
         @update:model-value="updateField"
       />
       <div v-if="showMessage" class="p-3" data-test="contribtion-message">
@@ -23,33 +22,33 @@
       <div v-else>
         <input-textarea
           id="contribution-memo"
+          :model-value="formValues.memo"
           name="memo"
           :label="$t('contribution.activity')"
           :placeholder="$t('contribution.yourActivity')"
-          :rules="{ required: true, min: 5, max: 255 }"
+          :rules="validationSchema"
+          @update:model-value="updateField"
         />
-        <input-hour
+        <ValidatedInput
           name="hours"
+          :model-value="formValues.hours"
           :label="$t('form.hours')"
           placeholder="0.01"
-          :rules="{
-            required: true,
-            // decimal: 2,
-            min: 0.01,
-            max: validMaxTime,
-          }"
-          :valid-max-time="validMaxTime"
+          step="0.01"
+          type="number"
+          :rules="validationSchema"
+          @update:model-value="updateField"
         />
-        <input-amount
+        <LabeledInput
           id="contribution-amount"
           class="mt-3"
           name="amount"
           :label="$t('form.amount')"
           placeholder="20"
-          :rules="{ required: true, gddSendAmount: { min: 20, max: validMaxGDD } }"
-          typ="ContributionForm"
+          readonly
+          type="text"
+          trim
         />
-
         <BRow class="mt-5">
           <BCol>
             <BButton
@@ -80,14 +79,14 @@
 </template>
 
 <script setup>
-import { ref, computed, watch } from 'vue'
+import { ref, computed } from 'vue'
 import { useI18n } from 'vue-i18n'
-import InputHour from '@/components/Inputs/InputHour'
-import InputAmount from '@/components/Inputs/InputAmount'
 import InputTextarea from '@/components/Inputs/InputTextarea'
-import ValidatedInput from '@/components/Inputs/ValidatedInput.vue'
-import { createContributionFormValidation } from '@/validationSchemas'
-import { useForm, useField } from 'vee-validate'
+import ValidatedInput from '@/components/Inputs/ValidatedInput'
+import LabeledInput from '@/components/Inputs/LabeledInput'
+import { memo } from '@/validationSchemas'
+import { useForm } from 'vee-validate'
+import { object, date, number } from 'yup'
 
 const props = defineProps({
   modelValue: { type: Object, required: true },
@@ -103,10 +102,34 @@ const { t } = useI18n()
 
 const form = ref({ ...props.modelValue })
 
-const validationSchema = createContributionFormValidation(t)
-const schemaDescription = validationSchema.describe()
-// console.log(schemaDescription)
+const maxHours = computed(() => Number(props.isThisMonth ? props.maxGddThisMonth : props.maxGddLastMonth / 20))
 
+const validationSchema = computed(() => {
+  // const maxGDD = Number(props.isThisMonth ? props.maxGddThisMonth : props.maxGddLastMonth)
+  // const maxHours = Number(maxGDD / 20)
+  console.log('compute validationSchema', { maxHours })
+  return object({
+    // The date field is required and needs to be a valid date
+    // contribution date
+    date: date()
+      .required('contribution.noDateSelected')
+      .min(new Date(new Date().setMonth(new Date().getMonth() - 1, 1)).toISOString().slice(0, 10))  // min date is first day of last month
+      .max(new Date().toISOString().slice(0, 10))
+      .default(''), // date cannot be in the future
+    memo,
+    hours: number().required('contribution.noHours')
+      .min(0.01, ({min}) => ({ key: 'form.validation.gddCreationTime.min', values: { min } }))
+      .max(maxHours.value, ({max}) => ({ key: 'form.validation.gddCreationTime.max', values: { max } }))
+      .test(
+        'decimal-places',
+        'form.validation.gddCreationTime.decimal-places',
+        (value) => {
+          if (value === undefined || value === null) return true
+          return /^\d+(\.\d{0,2})?$/.test(value.toString())
+        }
+      ),
+  })  
+})
 const {
   values: formValues,
   meta: formMeta,
@@ -119,15 +142,16 @@ const {
     hours: props.modelValue.hours,
     amount: props.modelValue.amount,
   },
-  validationSchema,
+  validationSchema: validationSchema.value,
 })
 
-const { meta: dataFieldMeta } = useField('date')
-
 const updateField = (newValue, name) => {
   if (typeof name === 'string' && name.length) {
     setFieldValue(name, newValue)
   }
+  if (name === 'hours') {
+    setFieldValue('amount', (newValue * 20).toFixed(2).toString())
+  }
 }
 
 const showMessage = computed(() => {
@@ -148,14 +172,6 @@ const disabled = computed(() => {
   )
 })
 
-const validMaxGDD = computed(() => {
-  return Number(props.isThisMonth ? props.maxGddThisMonth : props.maxGddLastMonth)
-})
-
-const validMaxTime = computed(() => {
-  return Number(validMaxGDD.value / 20)
-})
-
 const noOpenCreation = computed(() => {
   if (props.maxGddThisMonth <= 0 && props.maxGddLastMonth <= 0) {
     return t('contribution.noOpenCreation.allMonth')
@@ -169,17 +185,6 @@ const noOpenCreation = computed(() => {
   return ''
 })
 
-watch(
-  () => formValues.hours,
-  () => {
-    updateAmount(formValues.hours)
-  },
-)
-
-function updateAmount(hours) {
-  setFieldValue('amount', (hours * 20).toFixed(2).toString())
-}
-
 function submit() {
   const dataToSave = { ...formValues }
   let emitOption = 'set-contribution'
@@ -194,12 +199,11 @@ function submit() {
 function fullFormReset() {
   resetForm({
     values: {
-      id: null,
       date: '',
       memo: '',
-      hours: 0,
+      hours: 0.0,
       amount: '',
-    },
+    }
   })
 }
 </script>
diff --git a/frontend/src/components/Inputs/InputTextarea.vue b/frontend/src/components/Inputs/InputTextarea.vue
index 2d1d2a12e..41e649265 100644
--- a/frontend/src/components/Inputs/InputTextarea.vue
+++ b/frontend/src/components/Inputs/InputTextarea.vue
@@ -16,7 +16,7 @@
         @update:modelValue="currentValue = $event"
       />
       <BFormInvalidFeedback v-if="errorMessage">
-        {{ errorMessage }}
+        {{ translatedErrorString }}
       </BFormInvalidFeedback>
     </BFormGroup>
   </div>
@@ -25,6 +25,8 @@
 <script setup>
 import { computed } from 'vue'
 import { useField } from 'vee-validate'
+import { useI18n } from 'vue-i18n'
+import { isLanguageKey } from '@/validationSchemas'
 
 const props = defineProps({
   rules: {
@@ -50,7 +52,17 @@ const props = defineProps({
 })
 
 const { value: currentValue, errorMessage, meta } = useField(props.name, props.rules)
-
+const { t } = useI18n()
+const translatedErrorString = computed(() => {
+  console.log(errorMessage)
+  if (typeof errorMessage.value === 'object') {
+    return t(errorMessage.value.key, errorMessage.value.values)
+  } else if (isLanguageKey(errorMessage.value)) {
+    return t(errorMessage.value)
+  } else {
+    return errorMessage
+  }
+})
 const labelFor = computed(() => `${props.name}-input-field`)
 </script>
 
diff --git a/frontend/src/components/Inputs/LabeledInput.vue b/frontend/src/components/Inputs/LabeledInput.vue
new file mode 100644
index 000000000..7fd4a9efe
--- /dev/null
+++ b/frontend/src/components/Inputs/LabeledInput.vue
@@ -0,0 +1,32 @@
+<template>
+  <div :class="wrapperClassName">
+    <BFormGroup :label="label" :label-for="labelFor">
+      <BFormInput
+        v-bind="$attrs"
+      />
+      <slot></slot>
+    </BFormGroup>
+  </div>
+</template>
+
+<script setup>
+import { computed, defineOptions } from 'vue'
+
+defineOptions({
+  inheritAttrs: false,
+})
+
+const props = defineProps({
+  label: {
+    type: String,
+    required: true,
+  },
+  name: {
+    type: String,
+    required: true,
+  },
+})
+
+const wrapperClassName = computed(() => `input-${props.name}`)
+const labelFor = computed(() => `${props.name}-input-field`)
+</script>
diff --git a/frontend/src/components/Inputs/ValidatedInput.vue b/frontend/src/components/Inputs/ValidatedInput.vue
index 9be51b9c1..50d869529 100644
--- a/frontend/src/components/Inputs/ValidatedInput.vue
+++ b/frontend/src/components/Inputs/ValidatedInput.vue
@@ -1,58 +1,73 @@
 <template>
-  <div :class="wrapperClassName">
-    <BFormGroup :label="label" :label-for="labelFor">
-      <BFormInput
-        v-bind="$attrs"
-        :min="minValue"
-        :max="maxValue"
-        :model-value="modelValue"
-        :reset-value="props.schemaDescription.default"
-        :locale="$i18n.locale"
-        :required="!props.schemaDescription.optional"
-        @input="updateValue($event.target.value)"
-      />
-      <BFormInvalidFeedback v-if="errorMessage">
-        {{ props.errorMessage }}
-      </BFormInvalidFeedback>
-    </BFormGroup>
-  </div>
+  <LabeledInput 
+    v-bind="$attrs"
+    :min="minValue"
+    :max="maxValue"
+    :model-value="currentValue"
+    :reset-value="resetValue"
+    :locale="$i18n.locale"
+    :required="!isOptional"
+    :label="props.label"
+    :name="props.name"
+    :state="meta.valid"
+    @input="updateValue($event.target.value)">
+    <BFormInvalidFeedback v-if="errorMessage">
+        {{ $t(translatedErrorString) }}
+    </BFormInvalidFeedback>
+  </LabeledInput>
 </template>
 
 <script setup>
-import { computed, defineOptions } from 'vue'
-
-defineOptions({
-  inheritAttrs: false,
-})
+import { computed } from 'vue'
+import LabeledInput from './LabeledInput'
+import { useI18n } from 'vue-i18n'
+import { isLanguageKey } from '@/validationSchemas'
+import { useField } from 'vee-validate'
 
 const props = defineProps({
-  errorMessage: {
-    type: String,
-    required: false,
-  },
+  errorMessage: [String, Object],
   label: {
     type: String,
     required: true,
   },
-  modelValue: {
+  modelValue: [String, Number],
+  name: {
     type: String,
     required: true,
   },
-  name: [String, Number],
-  schemaDescription: {
+  rules: {
     type: Object,
-    required: true,
+    default: () => ({}),
   },
 })
 
-const emit = defineEmits('update:modelValue')
+const { t } = useI18n()
+const translatedErrorString = computed(() => {
+  const error = errorMessage.value
+  const type = typeof error
+  console.log(error)
+  if (type === 'object') {
+    return t(error.key, error.values)
+  } else if (type === 'string' && error.length > 0 && isLanguageKey(error)) {
+    return t(error)
+  } else {
+    return error
+  }
+})
+
+const emit = defineEmits(['update:modelValue'])
 const updateValue = (newValue) => emit('update:modelValue', newValue, props.name)
 
 // extract additional parameter like min and max from schema
-const getDateOnly = (rules, name) => rules.find((test) => test.name === name)?.params[name]
+const getDateOnly = (schemaDescription, name) => schemaDescription.fields[props.name].tests.find((test) => test.name === name)?.params[name]
 
-const minValue = computed(() => getDateOnly(props.schemaDescription.tests, 'min'))
-const maxValue = computed(() => getDateOnly(props.schemaDescription.tests, 'max'))
-const wrapperClassName = computed(() => `input-${props.name}`)
-const labelFor = computed(() => `${props.name}-input-field`)
+const schemaDescription = computed(() => props.rules.describe())
+console.log(schemaDescription.value)
+const minValue = computed(() => getDateOnly(schemaDescription.value, 'min'))
+const maxValue = computed(() => getDateOnly(schemaDescription.value, 'max'))
+const resetValue = computed(() => schemaDescription.value.fields[props.name].default)
+const isOptional = computed(() => schemaDescription.value.fields[props.name].optional)
+
+const { value: currentValue, errorMessage, meta } = useField(props.name, props.rules)
+console.log('max value: ', maxValue)
 </script>
diff --git a/frontend/src/locales/de.json b/frontend/src/locales/de.json
index dd34fbad4..0c71a5407 100644
--- a/frontend/src/locales/de.json
+++ b/frontend/src/locales/de.json
@@ -77,6 +77,7 @@
       "myContributions": "Du hast noch keine Beiträge eingereicht."
     },
     "noDateSelected": "Wähle irgendein Datum im Monat",
+    "noHours": "Bitte trage deine Stunden ein",
     "noOpenCreation": {
       "allMonth": "Für alle beiden Monate ist dein Schöpfungslimit erreicht. Den Nächsten Monat kannst du wieder 1000 GDD Schöpfen.",
       "lastMonth": "Für den ausgewählten Monat ist das Schöpfungslimit erreicht.",
@@ -185,9 +186,17 @@
     "username": "Benutzername",
     "username-placeholder": "Wähle deinen Benutzernamen",
     "validation": {
-      "gddCreationTime": "Das Feld {_field_} muss eine Zahl zwischen {min} und {max} mit höchstens einer Nachkommastelle sein",
+      "gddCreationTime": {
+        "min": "Die Stunden sollten mindestens {min} groß sein",
+        "max": "Die Stunden sollten höchsten {max} groß sein",
+        "decimal-places": "Die Stunden sollten maximal zwei Nachkommastellen enthalten"
+      },
       "gddSendAmount": "Das Feld {_field_} muss eine Zahl zwischen {min} und {max} mit höchstens zwei Nachkommastellen sein",
       "is-not": "Du kannst dir selbst keine Gradidos überweisen",
+      "memo": {
+        "min": "Die Tätigkeitsbeschreibung sollte mindestens {min} Zeichen lang sein",
+        "max": "Die Tätigkeitsbeschreibung sollte höchstens {max} Zeichen lang sein"
+      },
       "requiredField": "{fieldName} ist ein Pflichtfeld",
       "username-allowed-chars": "Der Nutzername darf nur aus Buchstaben (ohne Umlaute), Zahlen, Binde- oder Unterstrichen bestehen.",
       "username-hyphens": "Binde- oder Unterstriche müssen zwischen Buchstaben oder Zahlen stehen.",
diff --git a/frontend/src/locales/en.json b/frontend/src/locales/en.json
index 9346ea609..8804c7fe1 100644
--- a/frontend/src/locales/en.json
+++ b/frontend/src/locales/en.json
@@ -77,6 +77,7 @@
       "myContributions": "You have not submitted any entries yet."
     },
     "noDateSelected": "Choose any date in the month",
+    "noHours": "Please enter your hours",
     "noOpenCreation": {
       "allMonth": "For all two months your creation limit is reached. The next month you can create 1000 GDD again.",
       "lastMonth": "The creation limit is reached for the selected month.",
@@ -188,6 +189,10 @@
       "gddCreationTime": "The field {_field_} must be a number between {min} and {max} with at most one decimal place.",
       "gddSendAmount": "The {_field_} field must be a number between {min} and {max} with at most two digits after the decimal point",
       "is-not": "You cannot send Gradidos to yourself",
+      "memo": {
+        "min": "The job description should be at least {min} characters long",
+        "max": "The job description should not be longer than {max} characters"
+      },
       "requiredField": "The {fieldName} field is required",
       "username-allowed-chars": "The username may only contain letters, numbers, hyphens or underscores.",
       "username-hyphens": "Hyphens or underscores must be in between letters or numbers.",
diff --git a/frontend/src/validationSchemas.js b/frontend/src/validationSchemas.js
index ae09a16a8..fe3ef901e 100644
--- a/frontend/src/validationSchemas.js
+++ b/frontend/src/validationSchemas.js
@@ -1,14 +1,10 @@
-import { object, string, date } from 'yup'
+import { string } from 'yup'
+
+// TODO: only needed for grace period, before all inputs updated for using veeValidate + yup
+export const isLanguageKey = (str) => str.match(/^(?!\.)[a-z][a-zA-Z0-9]*([.][a-z][a-zA-Z0-9]*)*(?<!\.)$/)
+
+export const memo = string()
+  .required('contribution.yourActivity')
+  .min(5, ({min}) => ({ key: 'form.validation.memo.min', values: { min } }))
+  .max(255, ({max}) => ({ key: 'form.validation.memo.max', values: { max } }))
 
-export const createContributionFormValidation = (t) => {
-  return object({
-    // The date field is required and needs to be a valid date
-    // contribution date
-    date: date()
-      .required(t('contribution.noDateSelected'))
-      .min(new Date(new Date().setMonth(new Date().getMonth() - 1, 1)).toISOString().slice(0, 10)) // min date is first day of last month
-      .max(new Date().toISOString().slice(0, 10))
-      .default(''), // date cannot be in the future
-    memo: string().required(t('')).min(5).max(255),
-  })
-}