diff --git a/app/models/category.rb b/app/models/category.rb
new file mode 100644
index 0000000..3437f68
--- /dev/null
+++ b/app/models/category.rb
@@ -0,0 +1,3 @@
+class Category < ActiveRecord::Base
+  has_many :jobs
+end
\ No newline at end of file
diff --git a/app/models/job.rb b/app/models/job.rb
new file mode 100644
index 0000000..0ecd8e7
--- /dev/null
+++ b/app/models/job.rb
@@ -0,0 +1,4 @@
+class Job < ActiveRecord::Base
+  has_and_belongs_to_many :tags
+  has_one :category
+end
\ No newline at end of file
diff --git a/app/models/jobseeker.rb b/app/models/jobseeker.rb
new file mode 100644
index 0000000..fe4d723
--- /dev/null
+++ b/app/models/jobseeker.rb
@@ -0,0 +1,3 @@
+class Jobseeker < ActiveRecord::Base
+  has_and_belongs_to_many :roles
+end
\ No newline at end of file
diff --git a/app/models/skill.rb b/app/models/skill.rb
new file mode 100644
index 0000000..f60b98a
--- /dev/null
+++ b/app/models/skill.rb
@@ -0,0 +1,2 @@
+class Skill < ActiveRecord::Base
+end
\ No newline at end of file
diff --git a/app/models/tag.rb b/app/models/tag.rb
new file mode 100644
index 0000000..999778c
--- /dev/null
+++ b/app/models/tag.rb
@@ -0,0 +1,3 @@
+class Tag < ActiveRecord::Base
+  has_and_belongs_to_many :jobs
+end
\ No newline at end of file