diff --git a/docs/zSelectLockLabors.rst b/docs/zSelectLockLabors.rst
new file mode 100644
index 000000000..4cfa2ff9b
--- /dev/null
+++ b/docs/zSelectLockLabors.rst
@@ -0,0 +1,26 @@
+Select Lock Overlay
+===================
+
+This is a DFHack overlay plugin for Dwarf Fortress that simulates the selection and locking of multiple units within the **Work Details** screen. It provides a simple UI interface to batch-toggle units' labor assignments, either by selecting, locking, or both.
+
+Features
+--------
+
+- **Overlay Interface**: Integrated directly into the `LABOR/WORK_DETAILS` viewscreen.
+- **Action Modes**: Choose between `Select only`, `Lock only`, or `Select + Lock`.
+- **Batch Processing**: Specify how many entries to affect and apply actions with one click.
+- **Non-Intrusive**: Uses DFHack GUI input simulation to trigger existing functionality.
+
+Usage
+-----
+
+Once the plugin is loaded and you're in the `Work Details` screen (e.g., `y` -> `Work Details`), the overlay will automatically appear.
+
+1. Use the **Mode** dropdown to select what action(s) to simulate:
+   - `Select only`: Just toggles unit selection.
+   - `Lock only`: Just toggles the lock status.
+   - `Select + Lock`: Toggles both selection and lock.
+
+2. Adjust the number of entries to apply actions to (default is 100).
+
+3. Press the **RUN** button (or the hotkey defined for it) to execute the actions.
diff --git a/zSelectLockLabors.lua b/zSelectLockLabors.lua
new file mode 100644
index 000000000..912a9091b
--- /dev/null
+++ b/zSelectLockLabors.lua
@@ -0,0 +1,98 @@
+--@module=true
+local gui = require('gui')
+local widgets = require('gui.widgets')
+local overlay = require('plugins.overlay')
+
+local SelectLockOverlay = defclass(nil, overlay.OverlayWidget)
+SelectLockOverlay.ATTRS {
+    desc = 'Simulate selection and locking of multiple units.',
+    viewscreens = {'dwarfmode/Info/LABOR/WORK_DETAILS/Default'},
+    default_enabled = true,
+    default_pos = {x = -70, y = 10},
+    frame = {w = 25, h = 6, r = 1, t = 1, transparent = false},
+}
+
+local function simulate_actions(self, count)
+        gui.simulateInput(dfhack.gui.getCurViewscreen(), 'STANDARDSCROLL_RIGHT')
+
+    local function step(i)
+        if i > count then
+            for _ = 1, count do
+                gui.simulateInput(dfhack.gui.getCurViewscreen(), 'STANDARDSCROLL_UP')
+                gui.simulateInput(dfhack.gui.getCurViewscreen(), 'CONTEXT_SCROLL_UP')
+            end
+            self.is_running = false
+            return
+        end
+
+        if self.action_mode ~= 'lock' then
+            gui.simulateInput(dfhack.gui.getCurViewscreen(), 'SELECT')
+        end
+        if self.action_mode ~= 'select' then
+            gui.simulateInput(dfhack.gui.getCurViewscreen(), 'UNITLIST_SPECIALIZE')
+        end
+        --This line is keyboard arrow down
+        gui.simulateInput(dfhack.gui.getCurViewscreen(), 'STANDARDSCROLL_DOWN')
+        --CONTEXT_SCROLL_DOWN helps with consistency. Otherwise the program will miss some units. Line below is scroll wheel down
+        gui.simulateInput(dfhack.gui.getCurViewscreen(), 'CONTEXT_SCROLL_DOWN')
+
+        dfhack.timeout(2, 'frames', function() step(i + 1) end)
+    end
+
+    step(1)
+end
+
+function SelectLockOverlay:init()
+    self.action_mode = 'both'
+    self.entry_count = 100
+    self.is_running = false
+    self:addviews{
+        widgets.Panel{
+            frame_style = gui.MEDIUM_FRAME,
+            frame_background = gui.CLEAR_PEN,
+            subviews = {
+                widgets.CycleHotkeyLabel{
+                    view_id = 'action_mode',
+                    frame = {l = 1, t = 1},
+                    label = 'Mode',
+                    option_gap = 2,
+                    options = {
+                        {label = 'Select only', value = 'select'},
+                        {label = 'Lock only', value = 'lock'},
+                        {label = 'Select + Lock', value = 'both'},
+                    },
+                    initial_option = 'both',
+                    on_change = function(val) self.action_mode = val end,
+                },
+                widgets.EditField{
+                    numeric = true,
+                    frame = {l = 1, t = 2},
+                    key = 'CUSTOM_CTRL_N',
+                    auto_focus = false,
+                    text = '7',
+                    on_change = function(val)
+                        local num = tonumber(val)
+                        self.entry_count = (num and num > 0 and math.floor(num)) or 100
+                    end,
+                },
+                widgets.HotkeyLabel{
+                    view_id = 'run_button',
+                    frame = {l = 1, t = 3},
+                    label = 'RUN',
+                    on_activate = function()
+                        if self.is_running then return end
+                        self.is_running = true
+                        simulate_actions(self, self.entry_count)
+                    end,
+                    enabled = function() return not self.is_running end,
+                },
+            },
+        },
+    }
+end
+
+OVERLAY_WIDGETS = {
+    select_lock_overlay = SelectLockOverlay,
+}
+
+return {}