diff --git a/DESCRIPTION b/DESCRIPTION
index 78d8472..a0bf97d 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: nonprobsvy
 Type: Package
 Title: Inference Based on Non-Probability Samples
-Version: 0.1.1
+Version: 0.1.2
 Authors@R:
     c(person(given = "Łukasz",
              family = "Chrostowski",
@@ -22,7 +22,7 @@ Encoding: UTF-8
 LazyData: true
 RdMacros: mathjaxr
 Roxygen: list(markdown = TRUE)
-RoxygenNote: 7.2.3
+RoxygenNote: 7.3.2
 URL: https://github.com/ncn-foreigners/nonprobsvy, https://ncn-foreigners.github.io/nonprobsvy/
 BugReports: https://github.com/ncn-foreigners/nonprobsvy/issues
 Suggests: 
diff --git a/NEWS.md b/NEWS.md
index 3edad14..be228f2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,9 +1,16 @@
+# nonprobsvy 0.1.2
+
+------------------------------------------------------------------------
+
+### Features
+- two additional datasets have been included: `jvs` (Job Vacancy Survey; a probability sample survey) and `admin` (Central Job Offers Database; a non-probability sample survey). The units and auxiliary variables have been aligned in a way that allows the data to be integrated using the methods implemented in this package.
+
 # nonprobsvy 0.1.1
 
 ------------------------------------------------------------------------
 
 ### Bugfixes
-- bug Fix occuring when estimation was based on auxiliary variable, which led to compression of the data from the frame to the vector.
+- bug Fix occurring when estimation was based on auxiliary variable, which led to compression of the data from the frame to the vector.
 - bug Fix related to not passing `maxit` argument from `controlSel` function to internally used `nleqslv` function
 - bug Fix related to storing `vector` in `model_frame` when predicting `y_hat` in mass imputation `glm` model when X is based in one auxiliary variable only - fix provided converting it to `data.frame` object.
     
diff --git a/R/data.R b/R/data.R
new file mode 100644
index 0000000..8f965a4
--- /dev/null
+++ b/R/data.R
@@ -0,0 +1,58 @@
+#' Job Vacancy Survey
+#'
+#' @description
+#' This is a subset of the subset of the Job Vacancy Survey from Poland (for one quarter).
+#' The data has been subject to slight manipulation, but the relationships in the data have been preserved.
+#' For further details on the JVS, please refer to the following link:
+#' \url{https://stat.gov.pl/obszary-tematyczne/rynek-pracy/popyt-na-prace/zeszyt-metodologiczny-popyt-na-prace,3,1.html}.
+#'
+#'
+#' @format A single data.frame with 6,523 rows and 6 columns
+#'
+#' \describe{
+#'   \item{\code{id}}{Identifier of an entity (company: legal or local).}
+#'   \item{\code{private}}{Whether the company is a private (1) or public (0) entity.}
+#'   \item{\code{size}}{The size of the entity: S -- small (to 9 employees), M -- medium (10-49) or L -- large (over 49).}
+#'   \item{\code{nace}}{The main NACE code for a given entity: C, D.E, F, G, H, I, J, K.L, M, N, O, P, Q or R.S (14 levels, 3 combined: D and E, K and L, and R and S).}
+#'   \item{\code{region}}{The region of Poland (16 levels: 02, 04, ..., 32).}
+#'   \item{\code{weight}}{The final (calibrated) weight (w-weight). We do not have access to design weights (d-weights).}
+#' }
+#'
+#' @docType data
+#' @keywords datasets
+#' @name jvs
+#' @rdname jvs
+#' @examples
+#'
+#' data("jvs")
+#' head(jvs)
+#'
+"jvs"
+
+#' Admin data (non-probability survey)
+#'
+#' @description
+#' This is a subset of the Central Job Offers Database, a voluntary administrative data set (non-probability sample).
+#' The data was slightly manipulated to ensure the relationships were preserved, and then aligned.
+#' For more information about the CBOP, please refer to: \url{https://oferty.praca.gov.pl/}.
+#'
+#' @format A single data.frame with 9,344 rows and 6 columns
+#'
+#' \describe{
+#'   \item{\code{id}}{Identifier of an entity (company: legal or local).}
+#'   \item{\code{private}}{Whether the company is a private (1) or public (0) entity.}
+#'   \item{\code{size}}{The size of the entity: S -- small (to 9 employees), M -- medium (10-49) or L -- large (over 49).}
+#'   \item{\code{nace}}{The main NACE code for a given entity: C, D.E, F, G, H, I, J, K.L, M, N, O, P, Q or R.S (14 levels, 3 combined: D and E, K and L, and R and S).}
+#'   \item{\code{region}}{The region of Poland (16 levels: 02, 04, ..., 32).}
+#'   \item{\code{single_shift}}{Whether an entity seeks employees on a single shift.}
+#' }
+#'
+#' @docType data
+#' @keywords datasets
+#' @name admin
+#' @rdname admin
+#' @examples
+#'
+#' data("admin")
+#' head(admin)
+"admin"
diff --git a/data/admin.rda b/data/admin.rda
new file mode 100644
index 0000000..af60a2a
Binary files /dev/null and b/data/admin.rda differ
diff --git a/data/jvs.rda b/data/jvs.rda
new file mode 100644
index 0000000..c55bae8
Binary files /dev/null and b/data/jvs.rda differ
diff --git a/man/admin.Rd b/man/admin.Rd
new file mode 100644
index 0000000..bae7b2c
--- /dev/null
+++ b/man/admin.Rd
@@ -0,0 +1,32 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/data.R
+\docType{data}
+\name{admin}
+\alias{admin}
+\title{Admin data (non-probability survey)}
+\format{
+A single data.frame with 9,344 rows and 6 columns
+
+\describe{
+\item{\code{id}}{Identifier of an entity (company: legal or local).}
+\item{\code{private}}{Whether the company is a private (1) or public (0) entity.}
+\item{\code{size}}{The size of the entity: S -- small (to 9 employees), M -- medium (10-49) or L -- large (over 49).}
+\item{\code{nace}}{The main NACE code for a given entity: C, D.E, F, G, H, I, J, K.L, M, N, O, P, Q or R.S (14 levels, 3 combined: D and E, K and L, and R and S).}
+\item{\code{region}}{The region of Poland (16 levels: 02, 04, ..., 32).}
+\item{\code{single_shift}}{Whether an entity seeks employees on a single shift.}
+}
+}
+\usage{
+admin
+}
+\description{
+This is a subset of the Central Job Offers Database, a voluntary administrative data set (non-probability sample).
+The data was slightly manipulated to ensure the relationships were preserved, and then aligned.
+For more information about the CBOP, please refer to: \url{https://oferty.praca.gov.pl/}.
+}
+\examples{
+
+data("admin")
+head(admin)
+}
+\keyword{datasets}
diff --git a/man/jvs.Rd b/man/jvs.Rd
new file mode 100644
index 0000000..8966df1
--- /dev/null
+++ b/man/jvs.Rd
@@ -0,0 +1,34 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/data.R
+\docType{data}
+\name{jvs}
+\alias{jvs}
+\title{Job Vacancy Survey}
+\format{
+A single data.frame with 6,523 rows and 6 columns
+
+\describe{
+\item{\code{id}}{Identifier of an entity (company: legal or local).}
+\item{\code{private}}{Whether the company is a private (1) or public (0) entity.}
+\item{\code{size}}{The size of the entity: S -- small (to 9 employees), M -- medium (10-49) or L -- large (over 49).}
+\item{\code{nace}}{The main NACE code for a given entity: C, D.E, F, G, H, I, J, K.L, M, N, O, P, Q or R.S (14 levels, 3 combined: D and E, K and L, and R and S).}
+\item{\code{region}}{The region of Poland (16 levels: 02, 04, ..., 32).}
+\item{\code{weight}}{The final (calibrated) weight (w-weight). We do not have access to design weights (d-weights).}
+}
+}
+\usage{
+jvs
+}
+\description{
+This is a subset of the subset of the Job Vacancy Survey from Poland (for one quarter).
+The data has been subject to slight manipulation, but the relationships in the data have been preserved.
+For further details on the JVS, please refer to the following link:
+\url{https://stat.gov.pl/obszary-tematyczne/rynek-pracy/popyt-na-prace/zeszyt-metodologiczny-popyt-na-prace,3,1.html}.
+}
+\examples{
+
+data("jvs")
+head(jvs)
+
+}
+\keyword{datasets}
diff --git a/nonprobsvy.Rproj b/nonprobsvy.Rproj
index 10812e2..a6de456 100644
--- a/nonprobsvy.Rproj
+++ b/nonprobsvy.Rproj
@@ -1,4 +1,5 @@
 Version: 1.0
+ProjectId: 320f8c93-491e-4ea6-a604-c30218d09bf4
 
 RestoreWorkspace: Default
 SaveWorkspace: Default