= simple_form_for @employee do |f|

  .row-fluid
    .span6
      %h3= t('form.person.address')
      = render 'vcards/form', :f => f

    .span6
      %h3= t_model(PhoneNumber)
      = link_to t_action(:more), [:new_phone_number, resource.persisted? ? resource : controller_name], :remote => true, :class => 'icon-add-text', :style => 'float: right'
      .nested-form.list.contacts
        = f.fields_for :vcard do |vcard|
          - vcard.object.contacts.build_defaults
          - vcard.fields_for :contacts do |contact|
            = render 'phone_numbers/form', :item => contact

  %h3= t('form.person.civil')
  .row-fluid
    .span6
      = f.input :sex, :as => :select, :collection => { t('sex.male') => Person::MALE, t('sex.female') => Person::FEMALE }
      = f.input :nationality
      = f.input :date_of_birth, :as => :date_field
    .span6
      = f.input :civil_status
      = f.input :religion
      = f.input :social_security_nr

  = f.fields_for :employments, (@employments || f.object.employments.valid) do |employment|
    = employment.input :employer_id, :as => :hidden

    = render 'employments/fields', :f => employment

  = f.button :submit

= simple_form_for @employee do |f|

  .row-fluid
    .span6
      %h3= t('form.person.address')
      = render 'vcards/form', :f => f

    .span6
      %h3= t_model(PhoneNumber)
      = link_to t_action(:more), [:new_phone_number, resource.persisted? ? resource : controller_name], :remote => true, :class => 'icon-add-text', :style => 'float: right'
      .nested-form.list.contacts
        = f.fields_for :vcard do |vcard|
          - vcard.object.contacts.build_defaults
          - vcard.fields_for :contacts do |contact|
            = render 'phone_numbers/form', :item => contact

  %h3= t('form.person.civil')
  .row-fluid
    .span6
      = f.input :sex, :as => :select, :collection => { t('sex.male') => Person::MALE, t('sex.female') => Person::FEMALE }
      = f.input :nationality
      = f.input :date_of_birth, :as => :date_field
    .span6
      = f.association :civil_status
      = f.association :religion
      = f.input :social_security_nr

  = f.fields_for :employments, (@employments || f.object.employments.valid) do |employment|
    = employment.input :employer_id, :as => :hidden

    = render 'employments/fields', :f => employment

  = f.button :submit

Use .association for :civil_status and :religion fields in employees form.
Use .association for :civil_status and :religion fields in employees form.
